21310367780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1637}}^1\times {\mathrm{50069}}^1$

素因数の和:51728

約数の個数: 48

約数和(自身を含む): 48224620080

約数和(自身を除く): 26914252300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1637, 3274, 6548, 8185, 16370, 21281, 32740, 42562, 50069, 85124, 100138, 106405, 200276, 212810, 250345, 425620, 500690, 650897, 1001380, 1301794, 2603588, 3254485, 6508970, 13017940, 81962953, 163925906, 327851812, 409814765, 819629530, 1065518389, 1639259060, 2131036778, 4262073556, 5327591945, 10655183890, 21310367780]

約数ペア:

[(1, 21310367780), (2, 10655183890), (4, 5327591945), (5, 4262073556), (10, 2131036778), (13, 1639259060), (20, 1065518389), (26, 819629530), (52, 409814765), (65, 327851812), (130, 163925906), (260, 81962953), (1637, 13017940), (3274, 6508970), (6548, 3254485), (8185, 2603588), (16370, 1301794), (21281, 1001380), (32740, 650897), (42562, 500690), (50069, 425620), (85124, 250345), (100138, 212810), (106405, 200276)]