1780454980

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{521}}^1\times {\mathrm{709}}^1$

素因数の和:1480

約数の個数: 48

約数和(自身を含む): 3766981680

約数和(自身を除く): 1986526700

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 521, 709, 964, 1042, 1205, 1418, 2084, 2410, 2605, 2836, 3545, 4820, 5210, 7090, 10420, 14180, 125561, 170869, 251122, 341738, 369389, 502244, 627805, 683476, 738778, 854345, 1255610, 1477556, 1708690, 1846945, 2511220, 3417380, 3693890, 7387780, 89022749, 178045498, 356090996, 445113745, 890227490, 1780454980]

約数ペア:

[(1, 1780454980), (2, 890227490), (4, 445113745), (5, 356090996), (10, 178045498), (20, 89022749), (241, 7387780), (482, 3693890), (521, 3417380), (709, 2511220), (964, 1846945), (1042, 1708690), (1205, 1477556), (1418, 1255610), (2084, 854345), (2410, 738778), (2605, 683476), (2836, 627805), (3545, 502244), (4820, 369389), (5210, 341738), (7090, 251122), (10420, 170869), (14180, 125561)]