245346400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{761}}^1$

素因数の和:825

約数の個数: 144

約数和(自身を含む): 666707328

約数和(自身を除く): 421360928

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 130, 155, 160, 200, 208, 248, 260, 310, 325, 400, 403, 416, 496, 520, 620, 650, 761, 775, 800, 806, 992, 1040, 1240, 1300, 1522, 1550, 1612, 2015, 2080, 2480, 2600, 3044, 3100, 3224, 3805, 4030, 4960, 5200, 6088, 6200, 6448, 7610, 8060, 9893, 10075, 10400, 12176, 12400, 12896, 15220, 16120, 19025, 19786, 20150, 23591, 24352, 24800, 30440, 32240, 38050, 39572, 40300, 47182, 49465, 60880, 64480, 76100, 79144, 80600, 94364, 98930, 117955, 121760, 152200, 158288, 161200, 188728, 197860, 235910, 247325, 304400, 306683, 316576, 322400, 377456, 395720, 471820, 494650, 589775, 608800, 613366, 754912, 791440, 943640, 989300, 1179550, 1226732, 1533415, 1582880, 1887280, 1978600, 2359100, 2453464, 3066830, 3774560, 3957200, 4718200, 4906928, 6133660, 7667075, 7914400, 9436400, 9813856, 12267320, 15334150, 18872800, 24534640, 30668300, 49069280, 61336600, 122673200, 245346400]

約数ペア:

[(1, 245346400), (2, 122673200), (4, 61336600), (5, 49069280), (8, 30668300), (10, 24534640), (13, 18872800), (16, 15334150), (20, 12267320), (25, 9813856), (26, 9436400), (31, 7914400), (32, 7667075), (40, 6133660), (50, 4906928), (52, 4718200), (62, 3957200), (65, 3774560), (80, 3066830), (100, 2453464), (104, 2359100), (124, 1978600), (130, 1887280), (155, 1582880), (160, 1533415), (200, 1226732), (208, 1179550), (248, 989300), (260, 943640), (310, 791440), (325, 754912), (400, 613366), (403, 608800), (416, 589775), (496, 494650), (520, 471820), (620, 395720), (650, 377456), (761, 322400), (775, 316576), (800, 306683), (806, 304400), (992, 247325), (1040, 235910), (1240, 197860), (1300, 188728), (1522, 161200), (1550, 158288), (1612, 152200), (2015, 121760), (2080, 117955), (2480, 98930), (2600, 94364), (3044, 80600), (3100, 79144), (3224, 76100), (3805, 64480), (4030, 60880), (4960, 49465), (5200, 47182), (6088, 40300), (6200, 39572), (6448, 38050), (7610, 32240), (8060, 30440), (9893, 24800), (10075, 24352), (10400, 23591), (12176, 20150), (12400, 19786), (12896, 19025), (15220, 16120)]