19842420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25439}}^1$

素因数の和:25464

約数の個数: 48

約数和(自身を含む): 59834880

約数和(自身を除く): 39992460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25439, 50878, 76317, 101756, 127195, 152634, 254390, 305268, 330707, 381585, 508780, 661414, 763170, 992121, 1322828, 1526340, 1653535, 1984242, 3307070, 3968484, 4960605, 6614140, 9921210, 19842420]

約数ペア:

[(1, 19842420), (2, 9921210), (3, 6614140), (4, 4960605), (5, 3968484), (6, 3307070), (10, 1984242), (12, 1653535), (13, 1526340), (15, 1322828), (20, 992121), (26, 763170), (30, 661414), (39, 508780), (52, 381585), (60, 330707), (65, 305268), (78, 254390), (130, 152634), (156, 127195), (195, 101756), (260, 76317), (390, 50878), (780, 25439)]