21239150

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:393

約数の個数: 48

約数和(自身を含む): 42259200

約数和(自身を除く): 21020050

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 79, 95, 158, 190, 283, 395, 475, 566, 790, 950, 1415, 1501, 1975, 2830, 3002, 3950, 5377, 7075, 7505, 10754, 14150, 15010, 22357, 26885, 37525, 44714, 53770, 75050, 111785, 134425, 223570, 268850, 424783, 558925, 849566, 1117850, 2123915, 4247830, 10619575, 21239150]

約数ペア:

[(1, 21239150), (2, 10619575), (5, 4247830), (10, 2123915), (19, 1117850), (25, 849566), (38, 558925), (50, 424783), (79, 268850), (95, 223570), (158, 134425), (190, 111785), (283, 75050), (395, 53770), (475, 44714), (566, 37525), (790, 26885), (950, 22357), (1415, 15010), (1501, 14150), (1975, 10754), (2830, 7505), (3002, 7075), (3950, 5377)]