397020100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1439}}^1$

素因数の和:1573

約数の個数: 72

約数和(自身を含む): 899942400

約数和(自身を除く): 502922300

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 89, 100, 124, 155, 178, 310, 356, 445, 620, 775, 890, 1439, 1550, 1780, 2225, 2759, 2878, 3100, 4450, 5518, 5756, 7195, 8900, 11036, 13795, 14390, 27590, 28780, 35975, 44609, 55180, 68975, 71950, 89218, 128071, 137950, 143900, 178436, 223045, 256142, 275900, 446090, 512284, 640355, 892180, 1115225, 1280710, 2230450, 2561420, 3201775, 3970201, 4460900, 6403550, 7940402, 12807100, 15880804, 19851005, 39702010, 79404020, 99255025, 198510050, 397020100]

約数ペア:

[(1, 397020100), (2, 198510050), (4, 99255025), (5, 79404020), (10, 39702010), (20, 19851005), (25, 15880804), (31, 12807100), (50, 7940402), (62, 6403550), (89, 4460900), (100, 3970201), (124, 3201775), (155, 2561420), (178, 2230450), (310, 1280710), (356, 1115225), (445, 892180), (620, 640355), (775, 512284), (890, 446090), (1439, 275900), (1550, 256142), (1780, 223045), (2225, 178436), (2759, 143900), (2878, 137950), (3100, 128071), (4450, 89218), (5518, 71950), (5756, 68975), (7195, 55180), (8900, 44609), (11036, 35975), (13795, 28780), (14390, 27590)]