21275228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{587}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 43563744

約数和(自身を除く): 22288516

約数列:

[1, 2, 4, 13, 17, 26, 34, 41, 52, 68, 82, 164, 221, 442, 533, 587, 697, 884, 1066, 1174, 1394, 2132, 2348, 2788, 7631, 9061, 9979, 15262, 18122, 19958, 24067, 30524, 36244, 39916, 48134, 96268, 129727, 259454, 312871, 409139, 518908, 625742, 818278, 1251484, 1636556, 5318807, 10637614, 21275228]

約数ペア:

[(1, 21275228), (2, 10637614), (4, 5318807), (13, 1636556), (17, 1251484), (26, 818278), (34, 625742), (41, 518908), (52, 409139), (68, 312871), (82, 259454), (164, 129727), (221, 96268), (442, 48134), (533, 39916), (587, 36244), (697, 30524), (884, 24067), (1066, 19958), (1174, 18122), (1394, 15262), (2132, 9979), (2348, 9061), (2788, 7631)]