201219720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{128987}}^1$

素因数の和:129014

約数の個数: 64

約数和(自身を含む): 650099520

約数和(自身を除く): 448879800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 128987, 257974, 386961, 515948, 644935, 773922, 1031896, 1289870, 1547844, 1676831, 1934805, 2579740, 3095688, 3353662, 3869610, 5030493, 5159480, 6707324, 7739220, 8384155, 10060986, 13414648, 15478440, 16768310, 20121972, 25152465, 33536620, 40243944, 50304930, 67073240, 100609860, 201219720]

約数ペア:

[(1, 201219720), (2, 100609860), (3, 67073240), (4, 50304930), (5, 40243944), (6, 33536620), (8, 25152465), (10, 20121972), (12, 16768310), (13, 15478440), (15, 13414648), (20, 10060986), (24, 8384155), (26, 7739220), (30, 6707324), (39, 5159480), (40, 5030493), (52, 3869610), (60, 3353662), (65, 3095688), (78, 2579740), (104, 1934805), (120, 1676831), (130, 1547844), (156, 1289870), (195, 1031896), (260, 773922), (312, 644935), (390, 515948), (520, 386961), (780, 257974), (1560, 128987)]