21782280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13963}}^1$

素因数の和:13990

約数の個数: 64

約数和(自身を含む): 70378560

約数和(自身を除く): 48596280

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, 13963, 27926, 41889, 55852, 69815, 83778, 111704, 139630, 167556, 181519, 209445, 279260, 335112, 363038, 418890, 544557, 558520, 726076, 837780, 907595, 1089114, 1452152, 1675560, 1815190, 2178228, 2722785, 3630380, 4356456, 5445570, 7260760, 10891140, 21782280]

約数ペア:

[(1, 21782280), (2, 10891140), (3, 7260760), (4, 5445570), (5, 4356456), (6, 3630380), (8, 2722785), (10, 2178228), (12, 1815190), (13, 1675560), (15, 1452152), (20, 1089114), (24, 907595), (26, 837780), (30, 726076), (39, 558520), (40, 544557), (52, 418890), (60, 363038), (65, 335112), (78, 279260), (104, 209445), (120, 181519), (130, 167556), (156, 139630), (195, 111704), (260, 83778), (312, 69815), (390, 55852), (520, 41889), (780, 27926), (1560, 13963)]