19660596800

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{30491}}^1$

素因数の和:30557

約数の個数: 168

約数和(自身を含む): 53781057792

約数和(自身を除く): 34120460992

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 64, 65, 80, 100, 104, 124, 130, 155, 160, 200, 208, 248, 260, 310, 320, 325, 400, 403, 416, 496, 520, 620, 650, 775, 800, 806, 832, 992, 1040, 1240, 1300, 1550, 1600, 1612, 1984, 2015, 2080, 2480, 2600, 3100, 3224, 4030, 4160, 4960, 5200, 6200, 6448, 8060, 9920, 10075, 10400, 12400, 12896, 16120, 20150, 20800, 24800, 25792, 30491, 32240, 40300, 49600, 60982, 64480, 80600, 121964, 128960, 152455, 161200, 243928, 304910, 322400, 396383, 487856, 609820, 644800, 762275, 792766, 945221, 975712, 1219640, 1524550, 1585532, 1890442, 1951424, 1981915, 2439280, 3049100, 3171064, 3780884, 3963830, 4726105, 4878560, 6098200, 6342128, 7561768, 7927660, 9452210, 9757120, 9909575, 12196400, 12287873, 12684256, 15123536, 15855320, 18904420, 19819150, 23630525, 24392800, 24575746, 25368512, 30247072, 31710640, 37808840, 39638300, 47261050, 48785600, 49151492, 60494144, 61439365, 63421280, 75617680, 79276600, 94522100, 98302984, 122878730, 126842560, 151235360, 158553200, 189044200, 196605968, 245757460, 302470720, 307196825, 317106400, 378088400, 393211936, 491514920, 614393650, 634212800, 756176800, 786423872, 983029840, 1228787300, 1512353600, 1966059680, 2457574600, 3932119360, 4915149200, 9830298400, 19660596800]

約数ペア:

[(1, 19660596800), (2, 9830298400), (4, 4915149200), (5, 3932119360), (8, 2457574600), (10, 1966059680), (13, 1512353600), (16, 1228787300), (20, 983029840), (25, 786423872), (26, 756176800), (31, 634212800), (32, 614393650), (40, 491514920), (50, 393211936), (52, 378088400), (62, 317106400), (64, 307196825), (65, 302470720), (80, 245757460), (100, 196605968), (104, 189044200), (124, 158553200), (130, 151235360), (155, 126842560), (160, 122878730), (200, 98302984), (208, 94522100), (248, 79276600), (260, 75617680), (310, 63421280), (320, 61439365), (325, 60494144), (400, 49151492), (403, 48785600), (416, 47261050), (496, 39638300), (520, 37808840), (620, 31710640), (650, 30247072), (775, 25368512), (800, 24575746), (806, 24392800), (832, 23630525), (992, 19819150), (1040, 18904420), (1240, 15855320), (1300, 15123536), (1550, 12684256), (1600, 12287873), (1612, 12196400), (1984, 9909575), (2015, 9757120), (2080, 9452210), (2480, 7927660), (2600, 7561768), (3100, 6342128), (3224, 6098200), (4030, 4878560), (4160, 4726105), (4960, 3963830), (5200, 3780884), (6200, 3171064), (6448, 3049100), (8060, 2439280), (9920, 1981915), (10075, 1951424), (10400, 1890442), (12400, 1585532), (12896, 1524550), (16120, 1219640), (20150, 975712), (20800, 945221), (24800, 792766), (25792, 762275), (30491, 644800), (32240, 609820), (40300, 487856), (49600, 396383), (60982, 322400), (64480, 304910), (80600, 243928), (121964, 161200), (128960, 152455)]