20992390000

素因数分解:

$2^4\times 5^4\times {\mathrm{211}}^1\times {\mathrm{9949}}^1$

素因数の和:10188

約数の個数: 100

約数和(自身を含む): 51070683400

約数和(自身を除く): 30078293400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 211, 250, 400, 422, 500, 625, 844, 1000, 1055, 1250, 1688, 2000, 2110, 2500, 3376, 4220, 5000, 5275, 8440, 9949, 10000, 10550, 16880, 19898, 21100, 26375, 39796, 42200, 49745, 52750, 79592, 84400, 99490, 105500, 131875, 159184, 198980, 211000, 248725, 263750, 397960, 422000, 497450, 527500, 795920, 994900, 1055000, 1243625, 1989800, 2099239, 2110000, 2487250, 3979600, 4198478, 4974500, 6218125, 8396956, 9949000, 10496195, 12436250, 16793912, 19898000, 20992390, 24872500, 33587824, 41984780, 49745000, 52480975, 83969560, 99490000, 104961950, 167939120, 209923900, 262404875, 419847800, 524809750, 839695600, 1049619500, 1312024375, 2099239000, 2624048750, 4198478000, 5248097500, 10496195000, 20992390000]

約数ペア:

[(1, 20992390000), (2, 10496195000), (4, 5248097500), (5, 4198478000), (8, 2624048750), (10, 2099239000), (16, 1312024375), (20, 1049619500), (25, 839695600), (40, 524809750), (50, 419847800), (80, 262404875), (100, 209923900), (125, 167939120), (200, 104961950), (211, 99490000), (250, 83969560), (400, 52480975), (422, 49745000), (500, 41984780), (625, 33587824), (844, 24872500), (1000, 20992390), (1055, 19898000), (1250, 16793912), (1688, 12436250), (2000, 10496195), (2110, 9949000), (2500, 8396956), (3376, 6218125), (4220, 4974500), (5000, 4198478), (5275, 3979600), (8440, 2487250), (9949, 2110000), (10000, 2099239), (10550, 1989800), (16880, 1243625), (19898, 1055000), (21100, 994900), (26375, 795920), (39796, 527500), (42200, 497450), (49745, 422000), (52750, 397960), (79592, 263750), (84400, 248725), (99490, 211000), (105500, 198980), (131875, 159184)]