17881420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 39223296

約数和(自身を除く): 21341876

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 151, 155, 191, 302, 310, 382, 604, 620, 755, 764, 955, 1510, 1910, 3020, 3820, 4681, 5921, 9362, 11842, 18724, 23405, 23684, 28841, 29605, 46810, 57682, 59210, 93620, 115364, 118420, 144205, 288410, 576820, 894071, 1788142, 3576284, 4470355, 8940710, 17881420]

約数ペア:

[(1, 17881420), (2, 8940710), (4, 4470355), (5, 3576284), (10, 1788142), (20, 894071), (31, 576820), (62, 288410), (124, 144205), (151, 118420), (155, 115364), (191, 93620), (302, 59210), (310, 57682), (382, 46810), (604, 29605), (620, 28841), (755, 23684), (764, 23405), (955, 18724), (1510, 11842), (1910, 9362), (3020, 5921), (3820, 4681)]