71002420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{353}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 152545680

約数和(自身を除く): 81543260

約数列:

[1, 2, 4, 5, 10, 20, 89, 113, 178, 226, 353, 356, 445, 452, 565, 706, 890, 1130, 1412, 1765, 1780, 2260, 3530, 7060, 10057, 20114, 31417, 39889, 40228, 50285, 62834, 79778, 100570, 125668, 157085, 159556, 199445, 201140, 314170, 398890, 628340, 797780, 3550121, 7100242, 14200484, 17750605, 35501210, 71002420]

約数ペア:

[(1, 71002420), (2, 35501210), (4, 17750605), (5, 14200484), (10, 7100242), (20, 3550121), (89, 797780), (113, 628340), (178, 398890), (226, 314170), (353, 201140), (356, 199445), (445, 159556), (452, 157085), (565, 125668), (706, 100570), (890, 79778), (1130, 62834), (1412, 50285), (1765, 40228), (1780, 39889), (2260, 31417), (3530, 20114), (7060, 10057)]