31857410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 65197440

約数和(自身を除く): 33340030

約数列:

[1, 2, 5, 10, 13, 26, 41, 43, 65, 82, 86, 130, 139, 205, 215, 278, 410, 430, 533, 559, 695, 1066, 1118, 1390, 1763, 1807, 2665, 2795, 3526, 3614, 5330, 5590, 5699, 5977, 8815, 9035, 11398, 11954, 17630, 18070, 22919, 28495, 29885, 45838, 56990, 59770, 74087, 77701, 114595, 148174, 155402, 229190, 245057, 370435, 388505, 490114, 740870, 777010, 1225285, 2450570, 3185741, 6371482, 15928705, 31857410]

約数ペア:

[(1, 31857410), (2, 15928705), (5, 6371482), (10, 3185741), (13, 2450570), (26, 1225285), (41, 777010), (43, 740870), (65, 490114), (82, 388505), (86, 370435), (130, 245057), (139, 229190), (205, 155402), (215, 148174), (278, 114595), (410, 77701), (430, 74087), (533, 59770), (559, 56990), (695, 45838), (1066, 29885), (1118, 28495), (1390, 22919), (1763, 18070), (1807, 17630), (2665, 11954), (2795, 11398), (3526, 9035), (3614, 8815), (5330, 5977), (5590, 5699)]