20647860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{653}}^1$

素因数の和:713

約数の個数: 96

約数和(自身を含む): 63286272

約数和(自身を除く): 42638412

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 31, 34, 51, 60, 62, 68, 85, 93, 102, 124, 155, 170, 186, 204, 255, 310, 340, 372, 465, 510, 527, 620, 653, 930, 1020, 1054, 1306, 1581, 1860, 1959, 2108, 2612, 2635, 3162, 3265, 3918, 5270, 6324, 6530, 7836, 7905, 9795, 10540, 11101, 13060, 15810, 19590, 20243, 22202, 31620, 33303, 39180, 40486, 44404, 55505, 60729, 66606, 80972, 101215, 111010, 121458, 133212, 166515, 202430, 222020, 242916, 303645, 333030, 344131, 404860, 607290, 666060, 688262, 1032393, 1214580, 1376524, 1720655, 2064786, 3441310, 4129572, 5161965, 6882620, 10323930, 20647860]

約数ペア:

[(1, 20647860), (2, 10323930), (3, 6882620), (4, 5161965), (5, 4129572), (6, 3441310), (10, 2064786), (12, 1720655), (15, 1376524), (17, 1214580), (20, 1032393), (30, 688262), (31, 666060), (34, 607290), (51, 404860), (60, 344131), (62, 333030), (68, 303645), (85, 242916), (93, 222020), (102, 202430), (124, 166515), (155, 133212), (170, 121458), (186, 111010), (204, 101215), (255, 80972), (310, 66606), (340, 60729), (372, 55505), (465, 44404), (510, 40486), (527, 39180), (620, 33303), (653, 31620), (930, 22202), (1020, 20243), (1054, 19590), (1306, 15810), (1581, 13060), (1860, 11101), (1959, 10540), (2108, 9795), (2612, 7905), (2635, 7836), (3162, 6530), (3265, 6324), (3918, 5270)]