21990350

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{631}}^1$

素因数の和:701

約数の個数: 48

約数和(自身を含む): 44434656

約数和(自身を除く): 22444306

約数列:

[1, 2, 5, 10, 17, 25, 34, 41, 50, 82, 85, 170, 205, 410, 425, 631, 697, 850, 1025, 1262, 1394, 2050, 3155, 3485, 6310, 6970, 10727, 15775, 17425, 21454, 25871, 31550, 34850, 51742, 53635, 107270, 129355, 258710, 268175, 439807, 536350, 646775, 879614, 1293550, 2199035, 4398070, 10995175, 21990350]

約数ペア:

[(1, 21990350), (2, 10995175), (5, 4398070), (10, 2199035), (17, 1293550), (25, 879614), (34, 646775), (41, 536350), (50, 439807), (82, 268175), (85, 258710), (170, 129355), (205, 107270), (410, 53635), (425, 51742), (631, 34850), (697, 31550), (850, 25871), (1025, 21454), (1262, 17425), (1394, 15775), (2050, 10727), (3155, 6970), (3485, 6310)]