20052078440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1\times {\mathrm{541}}^1$

素因数の和:1075

約数の個数: 128

約数和(自身を含む): 47428208640

約数和(自身を除く): 27376130200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 248, 284, 310, 355, 421, 541, 568, 620, 710, 842, 1082, 1240, 1420, 1684, 2105, 2164, 2201, 2705, 2840, 3368, 4210, 4328, 4402, 5410, 8420, 8804, 10820, 11005, 13051, 16771, 16840, 17608, 21640, 22010, 26102, 29891, 33542, 38411, 44020, 52204, 59782, 65255, 67084, 76822, 83855, 88040, 104408, 119564, 130510, 134168, 149455, 153644, 167710, 192055, 227761, 239128, 261020, 298910, 307288, 335420, 384110, 455522, 522040, 597820, 670840, 768220, 911044, 926621, 1138805, 1190741, 1195640, 1536440, 1822088, 1853242, 2277610, 2381482, 3706484, 4555220, 4633105, 4762964, 5953705, 7060591, 7412968, 9110440, 9266210, 9525928, 11907410, 14121182, 16171031, 18532420, 23814820, 28242364, 32342062, 35302955, 37064840, 47629640, 56484728, 64684124, 70605910, 80855155, 129368248, 141211820, 161710310, 282423640, 323420620, 501301961, 646841240, 1002603922, 2005207844, 2506509805, 4010415688, 5013019610, 10026039220, 20052078440]

約数ペア:

[(1, 20052078440), (2, 10026039220), (4, 5013019610), (5, 4010415688), (8, 2506509805), (10, 2005207844), (20, 1002603922), (31, 646841240), (40, 501301961), (62, 323420620), (71, 282423640), (124, 161710310), (142, 141211820), (155, 129368248), (248, 80855155), (284, 70605910), (310, 64684124), (355, 56484728), (421, 47629640), (541, 37064840), (568, 35302955), (620, 32342062), (710, 28242364), (842, 23814820), (1082, 18532420), (1240, 16171031), (1420, 14121182), (1684, 11907410), (2105, 9525928), (2164, 9266210), (2201, 9110440), (2705, 7412968), (2840, 7060591), (3368, 5953705), (4210, 4762964), (4328, 4633105), (4402, 4555220), (5410, 3706484), (8420, 2381482), (8804, 2277610), (10820, 1853242), (11005, 1822088), (13051, 1536440), (16771, 1195640), (16840, 1190741), (17608, 1138805), (21640, 926621), (22010, 911044), (26102, 768220), (29891, 670840), (33542, 597820), (38411, 522040), (44020, 455522), (52204, 384110), (59782, 335420), (65255, 307288), (67084, 298910), (76822, 261020), (83855, 239128), (88040, 227761), (104408, 192055), (119564, 167710), (130510, 153644), (134168, 149455)]