20556546400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{63761}}^1$

素因数の和:63825

約数の個数: 144

約数和(自身を含む): 55788179328

約数和(自身を除く): 35231632928

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, 775, 800, 806, 992, 1040, 1240, 1300, 1550, 1612, 2015, 2080, 2480, 2600, 3100, 3224, 4030, 4960, 5200, 6200, 6448, 8060, 10075, 10400, 12400, 12896, 16120, 20150, 24800, 32240, 40300, 63761, 64480, 80600, 127522, 161200, 255044, 318805, 322400, 510088, 637610, 828893, 1020176, 1275220, 1594025, 1657786, 1976591, 2040352, 2550440, 3188050, 3315572, 3953182, 4144465, 5100880, 6376100, 6631144, 7906364, 8288930, 9882955, 10201760, 12752200, 13262288, 15812728, 16577860, 19765910, 20722325, 25504400, 25695683, 26524576, 31625456, 33155720, 39531820, 41444650, 49414775, 51008800, 51391366, 63250912, 66311440, 79063640, 82889300, 98829550, 102782732, 128478415, 132622880, 158127280, 165778600, 197659100, 205565464, 256956830, 316254560, 331557200, 395318200, 411130928, 513913660, 642392075, 663114400, 790636400, 822261856, 1027827320, 1284784150, 1581272800, 2055654640, 2569568300, 4111309280, 5139136600, 10278273200, 20556546400]

約数ペア:

[(1, 20556546400), (2, 10278273200), (4, 5139136600), (5, 4111309280), (8, 2569568300), (10, 2055654640), (13, 1581272800), (16, 1284784150), (20, 1027827320), (25, 822261856), (26, 790636400), (31, 663114400), (32, 642392075), (40, 513913660), (50, 411130928), (52, 395318200), (62, 331557200), (65, 316254560), (80, 256956830), (100, 205565464), (104, 197659100), (124, 165778600), (130, 158127280), (155, 132622880), (160, 128478415), (200, 102782732), (208, 98829550), (248, 82889300), (260, 79063640), (310, 66311440), (325, 63250912), (400, 51391366), (403, 51008800), (416, 49414775), (496, 41444650), (520, 39531820), (620, 33155720), (650, 31625456), (775, 26524576), (800, 25695683), (806, 25504400), (992, 20722325), (1040, 19765910), (1240, 16577860), (1300, 15812728), (1550, 13262288), (1612, 12752200), (2015, 10201760), (2080, 9882955), (2480, 8288930), (2600, 7906364), (3100, 6631144), (3224, 6376100), (4030, 5100880), (4960, 4144465), (5200, 3953182), (6200, 3315572), (6448, 3188050), (8060, 2550440), (10075, 2040352), (10400, 1976591), (12400, 1657786), (12896, 1594025), (16120, 1275220), (20150, 1020176), (24800, 828893), (32240, 637610), (40300, 510088), (63761, 322400), (64480, 318805), (80600, 255044), (127522, 161200)]