18944471920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{739}}^1\times {\mathrm{29131}}^1$

素因数の和:29894

約数の個数: 80

約数和(自身を含む): 48116741760

約数和(自身を除く): 29172269840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 739, 880, 1478, 2956, 3695, 5912, 7390, 8129, 11824, 14780, 16258, 29131, 29560, 32516, 40645, 58262, 59120, 65032, 81290, 116524, 130064, 145655, 162580, 233048, 291310, 320441, 325160, 466096, 582620, 640882, 650320, 1165240, 1281764, 1602205, 2330480, 2563528, 3204410, 5127056, 6408820, 12817640, 21527809, 25635280, 43055618, 86111236, 107639045, 172222472, 215278090, 236805899, 344444944, 430556180, 473611798, 861112360, 947223596, 1184029495, 1722224720, 1894447192, 2368058990, 3788894384, 4736117980, 9472235960, 18944471920]

約数ペア:

[(1, 18944471920), (2, 9472235960), (4, 4736117980), (5, 3788894384), (8, 2368058990), (10, 1894447192), (11, 1722224720), (16, 1184029495), (20, 947223596), (22, 861112360), (40, 473611798), (44, 430556180), (55, 344444944), (80, 236805899), (88, 215278090), (110, 172222472), (176, 107639045), (220, 86111236), (440, 43055618), (739, 25635280), (880, 21527809), (1478, 12817640), (2956, 6408820), (3695, 5127056), (5912, 3204410), (7390, 2563528), (8129, 2330480), (11824, 1602205), (14780, 1281764), (16258, 1165240), (29131, 650320), (29560, 640882), (32516, 582620), (40645, 466096), (58262, 325160), (59120, 320441), (65032, 291310), (81290, 233048), (116524, 162580), (130064, 145655)]