20046460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{149}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 50047200

約数和(自身を除く): 30000740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 149, 155, 217, 298, 310, 434, 596, 620, 745, 868, 961, 1043, 1085, 1490, 1922, 2086, 2170, 2980, 3844, 4172, 4340, 4619, 4805, 5215, 6727, 9238, 9610, 10430, 13454, 18476, 19220, 20860, 23095, 26908, 32333, 33635, 46190, 64666, 67270, 92380, 129332, 134540, 143189, 161665, 286378, 323330, 572756, 646660, 715945, 1002323, 1431890, 2004646, 2863780, 4009292, 5011615, 10023230, 20046460]

約数ペア:

[(1, 20046460), (2, 10023230), (4, 5011615), (5, 4009292), (7, 2863780), (10, 2004646), (14, 1431890), (20, 1002323), (28, 715945), (31, 646660), (35, 572756), (62, 323330), (70, 286378), (124, 161665), (140, 143189), (149, 134540), (155, 129332), (217, 92380), (298, 67270), (310, 64666), (434, 46190), (596, 33635), (620, 32333), (745, 26908), (868, 23095), (961, 20860), (1043, 19220), (1085, 18476), (1490, 13454), (1922, 10430), (2086, 9610), (2170, 9238), (2980, 6727), (3844, 5215), (4172, 4805), (4340, 4619)]