64415000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1030

約数の個数: 80

約数和(自身を含む): 162697920

約数和(自身を除く): 98282920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 625, 650, 991, 1000, 1250, 1300, 1625, 1982, 2500, 2600, 3250, 3964, 4955, 5000, 6500, 7928, 8125, 9910, 12883, 13000, 16250, 19820, 24775, 25766, 32500, 39640, 49550, 51532, 64415, 65000, 99100, 103064, 123875, 128830, 198200, 247750, 257660, 322075, 495500, 515320, 619375, 644150, 991000, 1238750, 1288300, 1610375, 2477500, 2576600, 3220750, 4955000, 6441500, 8051875, 12883000, 16103750, 32207500, 64415000]

約数ペア:

[(1, 64415000), (2, 32207500), (4, 16103750), (5, 12883000), (8, 8051875), (10, 6441500), (13, 4955000), (20, 3220750), (25, 2576600), (26, 2477500), (40, 1610375), (50, 1288300), (52, 1238750), (65, 991000), (100, 644150), (104, 619375), (125, 515320), (130, 495500), (200, 322075), (250, 257660), (260, 247750), (325, 198200), (500, 128830), (520, 123875), (625, 103064), (650, 99100), (991, 65000), (1000, 64415), (1250, 51532), (1300, 49550), (1625, 39640), (1982, 32500), (2500, 25766), (2600, 24775), (3250, 19820), (3964, 16250), (4955, 13000), (5000, 12883), (6500, 9910), (7928, 8125)]