77381780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{281}}^2$

素因数の和:585

約数の個数: 54

約数和(自身を含む): 189707742

約数和(自身を除く): 112325962

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 281, 490, 562, 980, 1124, 1405, 1967, 2810, 3934, 5620, 7868, 9835, 13769, 19670, 27538, 39340, 55076, 68845, 78961, 137690, 157922, 275380, 315844, 394805, 552727, 789610, 1105454, 1579220, 2210908, 2763635, 3869089, 5527270, 7738178, 11054540, 15476356, 19345445, 38690890, 77381780]

約数ペア:

[(1, 77381780), (2, 38690890), (4, 19345445), (5, 15476356), (7, 11054540), (10, 7738178), (14, 5527270), (20, 3869089), (28, 2763635), (35, 2210908), (49, 1579220), (70, 1105454), (98, 789610), (140, 552727), (196, 394805), (245, 315844), (281, 275380), (490, 157922), (562, 137690), (980, 78961), (1124, 68845), (1405, 55076), (1967, 39340), (2810, 27538), (3934, 19670), (5620, 13769), (7868, 9835)]