18578420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1013}}^1$

素因数の和:1160

約数の個数: 48

約数和(自身を含む): 44972928

約数和(自身を除く): 26394508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1013, 1310, 1834, 2026, 2620, 3668, 4052, 4585, 5065, 7091, 9170, 10130, 14182, 18340, 20260, 28364, 35455, 70910, 132703, 141820, 265406, 530812, 663515, 928921, 1327030, 1857842, 2654060, 3715684, 4644605, 9289210, 18578420]

約数ペア:

[(1, 18578420), (2, 9289210), (4, 4644605), (5, 3715684), (7, 2654060), (10, 1857842), (14, 1327030), (20, 928921), (28, 663515), (35, 530812), (70, 265406), (131, 141820), (140, 132703), (262, 70910), (524, 35455), (655, 28364), (917, 20260), (1013, 18340), (1310, 14182), (1834, 10130), (2026, 9170), (2620, 7091), (3668, 5065), (4052, 4585)]