261093980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{26267}}^1$

素因数の和:26354

約数の個数: 48

約数和(自身を含む): 635475456

約数和(自身を除く): 374381476

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, 26267, 52534, 105068, 131335, 183869, 262670, 367738, 525340, 735476, 919345, 1838690, 1864957, 3677380, 3729914, 7459828, 9324785, 13054699, 18649570, 26109398, 37299140, 52218796, 65273495, 130546990, 261093980]

約数ペア:

[(1, 261093980), (2, 130546990), (4, 65273495), (5, 52218796), (7, 37299140), (10, 26109398), (14, 18649570), (20, 13054699), (28, 9324785), (35, 7459828), (70, 3729914), (71, 3677380), (140, 1864957), (142, 1838690), (284, 919345), (355, 735476), (497, 525340), (710, 367738), (994, 262670), (1420, 183869), (1988, 131335), (2485, 105068), (4970, 52534), (9940, 26267)]