278908240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:309

約数の個数: 160

約数和(自身を含む): 741952512

約数和(自身を除く): 463044272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 41, 52, 62, 65, 80, 82, 104, 124, 130, 155, 164, 205, 208, 211, 248, 260, 310, 328, 403, 410, 422, 496, 520, 533, 620, 656, 806, 820, 844, 1040, 1055, 1066, 1240, 1271, 1612, 1640, 1688, 2015, 2110, 2132, 2480, 2542, 2665, 2743, 3224, 3280, 3376, 4030, 4220, 4264, 5084, 5330, 5486, 6355, 6448, 6541, 8060, 8440, 8528, 8651, 10168, 10660, 10972, 12710, 13082, 13715, 16120, 16523, 16880, 17302, 20336, 21320, 21944, 25420, 26164, 27430, 32240, 32705, 33046, 34604, 42640, 43255, 43888, 50840, 52328, 54860, 65410, 66092, 69208, 82615, 85033, 86510, 101680, 104656, 109720, 112463, 130820, 132184, 138416, 165230, 170066, 173020, 219440, 224926, 261640, 264368, 268181, 330460, 340132, 346040, 425165, 449852, 523280, 536362, 562315, 660920, 680264, 692080, 850330, 899704, 1072724, 1124630, 1321840, 1340905, 1360528, 1700660, 1799408, 2145448, 2249260, 2681810, 3401320, 3486353, 4290896, 4498520, 5363620, 6802640, 6972706, 8997040, 10727240, 13945412, 17431765, 21454480, 27890824, 34863530, 55781648, 69727060, 139454120, 278908240]

約数ペア:

[(1, 278908240), (2, 139454120), (4, 69727060), (5, 55781648), (8, 34863530), (10, 27890824), (13, 21454480), (16, 17431765), (20, 13945412), (26, 10727240), (31, 8997040), (40, 6972706), (41, 6802640), (52, 5363620), (62, 4498520), (65, 4290896), (80, 3486353), (82, 3401320), (104, 2681810), (124, 2249260), (130, 2145448), (155, 1799408), (164, 1700660), (205, 1360528), (208, 1340905), (211, 1321840), (248, 1124630), (260, 1072724), (310, 899704), (328, 850330), (403, 692080), (410, 680264), (422, 660920), (496, 562315), (520, 536362), (533, 523280), (620, 449852), (656, 425165), (806, 346040), (820, 340132), (844, 330460), (1040, 268181), (1055, 264368), (1066, 261640), (1240, 224926), (1271, 219440), (1612, 173020), (1640, 170066), (1688, 165230), (2015, 138416), (2110, 132184), (2132, 130820), (2480, 112463), (2542, 109720), (2665, 104656), (2743, 101680), (3224, 86510), (3280, 85033), (3376, 82615), (4030, 69208), (4220, 66092), (4264, 65410), (5084, 54860), (5330, 52328), (5486, 50840), (6355, 43888), (6448, 43255), (6541, 42640), (8060, 34604), (8440, 33046), (8528, 32705), (8651, 32240), (10168, 27430), (10660, 26164), (10972, 25420), (12710, 21944), (13082, 21320), (13715, 20336), (16120, 17302), (16523, 16880)]