21433520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{239}}^1$

素因数の和:330

約数の個数: 80

約数和(自身を含む): 53568000

約数和(自身を除く): 32134480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 59, 76, 80, 95, 118, 152, 190, 236, 239, 295, 304, 380, 472, 478, 590, 760, 944, 956, 1121, 1180, 1195, 1520, 1912, 2242, 2360, 2390, 3824, 4484, 4541, 4720, 4780, 5605, 8968, 9082, 9560, 11210, 14101, 17936, 18164, 19120, 22420, 22705, 28202, 36328, 44840, 45410, 56404, 70505, 72656, 89680, 90820, 112808, 141010, 181640, 225616, 267919, 282020, 363280, 535838, 564040, 1071676, 1128080, 1339595, 2143352, 2679190, 4286704, 5358380, 10716760, 21433520]

約数ペア:

[(1, 21433520), (2, 10716760), (4, 5358380), (5, 4286704), (8, 2679190), (10, 2143352), (16, 1339595), (19, 1128080), (20, 1071676), (38, 564040), (40, 535838), (59, 363280), (76, 282020), (80, 267919), (95, 225616), (118, 181640), (152, 141010), (190, 112808), (236, 90820), (239, 89680), (295, 72656), (304, 70505), (380, 56404), (472, 45410), (478, 44840), (590, 36328), (760, 28202), (944, 22705), (956, 22420), (1121, 19120), (1180, 18164), (1195, 17936), (1520, 14101), (1912, 11210), (2242, 9560), (2360, 9082), (2390, 8968), (3824, 5605), (4484, 4780), (4541, 4720)]