12890240

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1831}}^1$

素因数の和:1861

約数の個数: 64

約数和(自身を含む): 33635520

約数和(自身を除く): 20745280

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 1831, 3520, 3662, 7040, 7324, 9155, 14648, 18310, 20141, 29296, 36620, 40282, 58592, 73240, 80564, 100705, 117184, 146480, 161128, 201410, 234368, 292960, 322256, 402820, 585920, 644512, 805640, 1171840, 1289024, 1611280, 2578048, 3222560, 6445120, 12890240]

約数ペア:

[(1, 12890240), (2, 6445120), (4, 3222560), (5, 2578048), (8, 1611280), (10, 1289024), (11, 1171840), (16, 805640), (20, 644512), (22, 585920), (32, 402820), (40, 322256), (44, 292960), (55, 234368), (64, 201410), (80, 161128), (88, 146480), (110, 117184), (128, 100705), (160, 80564), (176, 73240), (220, 58592), (320, 40282), (352, 36620), (440, 29296), (640, 20141), (704, 18310), (880, 14648), (1408, 9155), (1760, 7324), (1831, 7040), (3520, 3662)]