781660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:67

約数の個数: 72

約数和(自身を含む): 2010960

約数和(自身を除く): 1229300

約数列:

[1, 2, 4, 5, 10, 11, 17, 19, 20, 22, 34, 38, 44, 55, 68, 76, 85, 95, 110, 121, 170, 187, 190, 209, 220, 242, 323, 340, 374, 380, 418, 484, 605, 646, 748, 836, 935, 1045, 1210, 1292, 1615, 1870, 2057, 2090, 2299, 2420, 3230, 3553, 3740, 4114, 4180, 4598, 6460, 7106, 8228, 9196, 10285, 11495, 14212, 17765, 20570, 22990, 35530, 39083, 41140, 45980, 71060, 78166, 156332, 195415, 390830, 781660]

約数ペア:

[(1, 781660), (2, 390830), (4, 195415), (5, 156332), (10, 78166), (11, 71060), (17, 45980), (19, 41140), (20, 39083), (22, 35530), (34, 22990), (38, 20570), (44, 17765), (55, 14212), (68, 11495), (76, 10285), (85, 9196), (95, 8228), (110, 7106), (121, 6460), (170, 4598), (187, 4180), (190, 4114), (209, 3740), (220, 3553), (242, 3230), (323, 2420), (340, 2299), (374, 2090), (380, 2057), (418, 1870), (484, 1615), (605, 1292), (646, 1210), (748, 1045), (836, 935)]