20898679600

素因数分解:

$2^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{4111}}^1$

素因数の和:4379

約数の個数: 120

約数和(自身を含む): 51213150720

約数和(自身を除く): 30314471120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 142, 179, 200, 284, 355, 358, 400, 568, 710, 716, 895, 1136, 1420, 1432, 1775, 1790, 2840, 2864, 3550, 3580, 4111, 4475, 5680, 7100, 7160, 8222, 8950, 12709, 14200, 14320, 16444, 17900, 20555, 25418, 28400, 32888, 35800, 41110, 50836, 63545, 65776, 71600, 82220, 101672, 102775, 127090, 164440, 203344, 205550, 254180, 291881, 317725, 328880, 411100, 508360, 583762, 635450, 735869, 822200, 1016720, 1167524, 1270900, 1459405, 1471738, 1644400, 2335048, 2541800, 2918810, 2943476, 3679345, 4670096, 5083600, 5837620, 5886952, 7297025, 7358690, 11675240, 11773904, 14594050, 14717380, 18396725, 23350480, 29188100, 29434760, 36793450, 52246699, 58376200, 58869520, 73586900, 104493398, 116752400, 147173800, 208986796, 261233495, 294347600, 417973592, 522466990, 835947184, 1044933980, 1306167475, 2089867960, 2612334950, 4179735920, 5224669900, 10449339800, 20898679600]

約数ペア:

[(1, 20898679600), (2, 10449339800), (4, 5224669900), (5, 4179735920), (8, 2612334950), (10, 2089867960), (16, 1306167475), (20, 1044933980), (25, 835947184), (40, 522466990), (50, 417973592), (71, 294347600), (80, 261233495), (100, 208986796), (142, 147173800), (179, 116752400), (200, 104493398), (284, 73586900), (355, 58869520), (358, 58376200), (400, 52246699), (568, 36793450), (710, 29434760), (716, 29188100), (895, 23350480), (1136, 18396725), (1420, 14717380), (1432, 14594050), (1775, 11773904), (1790, 11675240), (2840, 7358690), (2864, 7297025), (3550, 5886952), (3580, 5837620), (4111, 5083600), (4475, 4670096), (5680, 3679345), (7100, 2943476), (7160, 2918810), (8222, 2541800), (8950, 2335048), (12709, 1644400), (14200, 1471738), (14320, 1459405), (16444, 1270900), (17900, 1167524), (20555, 1016720), (25418, 822200), (28400, 735869), (32888, 635450), (35800, 583762), (41110, 508360), (50836, 411100), (63545, 328880), (65776, 317725), (71600, 291881), (82220, 254180), (101672, 205550), (102775, 203344), (127090, 164440)]