21563500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:188

約数の個数: 96

約数和(自身を含む): 55246464

約数和(自身を除く): 33682964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 61, 70, 100, 101, 122, 125, 140, 175, 202, 244, 250, 305, 350, 404, 427, 500, 505, 610, 700, 707, 854, 875, 1010, 1220, 1414, 1525, 1708, 1750, 2020, 2135, 2525, 2828, 3050, 3500, 3535, 4270, 5050, 6100, 6161, 7070, 7625, 8540, 10100, 10675, 12322, 12625, 14140, 15250, 17675, 21350, 24644, 25250, 30500, 30805, 35350, 42700, 43127, 50500, 53375, 61610, 70700, 86254, 88375, 106750, 123220, 154025, 172508, 176750, 213500, 215635, 308050, 353500, 431270, 616100, 770125, 862540, 1078175, 1540250, 2156350, 3080500, 4312700, 5390875, 10781750, 21563500]

約数ペア:

[(1, 21563500), (2, 10781750), (4, 5390875), (5, 4312700), (7, 3080500), (10, 2156350), (14, 1540250), (20, 1078175), (25, 862540), (28, 770125), (35, 616100), (50, 431270), (61, 353500), (70, 308050), (100, 215635), (101, 213500), (122, 176750), (125, 172508), (140, 154025), (175, 123220), (202, 106750), (244, 88375), (250, 86254), (305, 70700), (350, 61610), (404, 53375), (427, 50500), (500, 43127), (505, 42700), (610, 35350), (700, 30805), (707, 30500), (854, 25250), (875, 24644), (1010, 21350), (1220, 17675), (1414, 15250), (1525, 14140), (1708, 12625), (1750, 12322), (2020, 10675), (2135, 10100), (2525, 8540), (2828, 7625), (3050, 7070), (3500, 6161), (3535, 6100), (4270, 5050)]