157220980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{15817}}^1$

素因数の和:15904

約数の個数: 48

約数和(自身を含む): 382669056

約数和(自身を除く): 225448076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 15817, 31634, 63268, 79085, 110719, 158170, 221438, 316340, 442876, 553595, 1107190, 1123007, 2214380, 2246014, 4492028, 5615035, 7861049, 11230070, 15722098, 22460140, 31444196, 39305245, 78610490, 157220980]

約数ペア:

[(1, 157220980), (2, 78610490), (4, 39305245), (5, 31444196), (7, 22460140), (10, 15722098), (14, 11230070), (20, 7861049), (28, 5615035), (35, 4492028), (70, 2246014), (71, 2214380), (140, 1123007), (142, 1107190), (284, 553595), (355, 442876), (497, 316340), (710, 221438), (994, 158170), (1420, 110719), (1988, 79085), (2485, 63268), (4970, 31634), (9940, 15817)]