178156940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{2371}}^1$

素因数の和:2427

約数の個数: 72

約数和(自身を含む): 428183952

約数和(自身を除く): 250027012

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 289, 340, 442, 578, 884, 1105, 1156, 1445, 2210, 2371, 2890, 3757, 4420, 4742, 5780, 7514, 9484, 11855, 15028, 18785, 23710, 30823, 37570, 40307, 47420, 61646, 75140, 80614, 123292, 154115, 161228, 201535, 308230, 403070, 523991, 616460, 685219, 806140, 1047982, 1370438, 2095964, 2619955, 2740876, 3426095, 5239910, 6852190, 8907847, 10479820, 13704380, 17815694, 35631388, 44539235, 89078470, 178156940]

約数ペア:

[(1, 178156940), (2, 89078470), (4, 44539235), (5, 35631388), (10, 17815694), (13, 13704380), (17, 10479820), (20, 8907847), (26, 6852190), (34, 5239910), (52, 3426095), (65, 2740876), (68, 2619955), (85, 2095964), (130, 1370438), (170, 1047982), (221, 806140), (260, 685219), (289, 616460), (340, 523991), (442, 403070), (578, 308230), (884, 201535), (1105, 161228), (1156, 154115), (1445, 123292), (2210, 80614), (2371, 75140), (2890, 61646), (3757, 47420), (4420, 40307), (4742, 37570), (5780, 30823), (7514, 23710), (9484, 18785), (11855, 15028)]