20745010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:283

約数の個数: 64

約数和(自身を含む): 44634240

約数和(自身を除く): 23889230

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 89, 110, 130, 143, 163, 178, 286, 326, 445, 715, 815, 890, 979, 1157, 1430, 1630, 1793, 1958, 2119, 2314, 3586, 4238, 4895, 5785, 8965, 9790, 10595, 11570, 12727, 14507, 17930, 21190, 23309, 25454, 29014, 46618, 63635, 72535, 116545, 127270, 145070, 159577, 188591, 233090, 319154, 377182, 797885, 942955, 1595770, 1885910, 2074501, 4149002, 10372505, 20745010]

約数ペア:

[(1, 20745010), (2, 10372505), (5, 4149002), (10, 2074501), (11, 1885910), (13, 1595770), (22, 942955), (26, 797885), (55, 377182), (65, 319154), (89, 233090), (110, 188591), (130, 159577), (143, 145070), (163, 127270), (178, 116545), (286, 72535), (326, 63635), (445, 46618), (715, 29014), (815, 25454), (890, 23309), (979, 21190), (1157, 17930), (1430, 14507), (1630, 12727), (1793, 11570), (1958, 10595), (2119, 9790), (2314, 8965), (3586, 5785), (4238, 4895)]