205129990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{919}}^1$

素因数の和:1057

約数の個数: 64

約数和(自身を含む): 425658240

約数和(自身を除く): 220528250

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 101, 130, 170, 202, 221, 442, 505, 919, 1010, 1105, 1313, 1717, 1838, 2210, 2626, 3434, 4595, 6565, 8585, 9190, 11947, 13130, 15623, 17170, 22321, 23894, 31246, 44642, 59735, 78115, 92819, 111605, 119470, 156230, 185638, 203099, 223210, 406198, 464095, 928190, 1015495, 1206647, 1577923, 2030990, 2413294, 3155846, 6033235, 7889615, 12066470, 15779230, 20512999, 41025998, 102564995, 205129990]

約数ペア:

[(1, 205129990), (2, 102564995), (5, 41025998), (10, 20512999), (13, 15779230), (17, 12066470), (26, 7889615), (34, 6033235), (65, 3155846), (85, 2413294), (101, 2030990), (130, 1577923), (170, 1206647), (202, 1015495), (221, 928190), (442, 464095), (505, 406198), (919, 223210), (1010, 203099), (1105, 185638), (1313, 156230), (1717, 119470), (1838, 111605), (2210, 92819), (2626, 78115), (3434, 59735), (4595, 44642), (6565, 31246), (8585, 23894), (9190, 22321), (11947, 17170), (13130, 15623)]