20904540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11239}}^1$

素因数の和:11282

約数の個数: 48

約数和(自身を含む): 60426240

約数和(自身を除く): 39521700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860, 11239, 22478, 33717, 44956, 56195, 67434, 112390, 134868, 168585, 224780, 337170, 348409, 674340, 696818, 1045227, 1393636, 1742045, 2090454, 3484090, 4180908, 5226135, 6968180, 10452270, 20904540]

約数ペア:

[(1, 20904540), (2, 10452270), (3, 6968180), (4, 5226135), (5, 4180908), (6, 3484090), (10, 2090454), (12, 1742045), (15, 1393636), (20, 1045227), (30, 696818), (31, 674340), (60, 348409), (62, 337170), (93, 224780), (124, 168585), (155, 134868), (186, 112390), (310, 67434), (372, 56195), (465, 44956), (620, 33717), (930, 22478), (1860, 11239)]