21988330

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 49529088

約数和(自身を除く): 27540758

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 73, 91, 130, 146, 182, 331, 365, 455, 511, 662, 730, 910, 949, 1022, 1655, 1898, 2317, 2555, 3310, 4303, 4634, 4745, 5110, 6643, 8606, 9490, 11585, 13286, 21515, 23170, 24163, 30121, 33215, 43030, 48326, 60242, 66430, 120815, 150605, 169141, 241630, 301210, 314119, 338282, 628238, 845705, 1570595, 1691410, 2198833, 3141190, 4397666, 10994165, 21988330]

約数ペア:

[(1, 21988330), (2, 10994165), (5, 4397666), (7, 3141190), (10, 2198833), (13, 1691410), (14, 1570595), (26, 845705), (35, 628238), (65, 338282), (70, 314119), (73, 301210), (91, 241630), (130, 169141), (146, 150605), (182, 120815), (331, 66430), (365, 60242), (455, 48326), (511, 43030), (662, 33215), (730, 30121), (910, 24163), (949, 23170), (1022, 21515), (1655, 13286), (1898, 11585), (2317, 9490), (2555, 8606), (3310, 6643), (4303, 5110), (4634, 4745)]