28105680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{647}}^1$

素因数の和:844

約数の個数: 80

約数和(自身を含む): 87744384

約数和(自身を除く): 59638704

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 181, 240, 362, 543, 647, 724, 905, 1086, 1294, 1448, 1810, 1941, 2172, 2588, 2715, 2896, 3235, 3620, 3882, 4344, 5176, 5430, 6470, 7240, 7764, 8688, 9705, 10352, 10860, 12940, 14480, 15528, 19410, 21720, 25880, 31056, 38820, 43440, 51760, 77640, 117107, 155280, 234214, 351321, 468428, 585535, 702642, 936856, 1171070, 1405284, 1756605, 1873712, 2342140, 2810568, 3513210, 4684280, 5621136, 7026420, 9368560, 14052840, 28105680]

約数ペア:

[(1, 28105680), (2, 14052840), (3, 9368560), (4, 7026420), (5, 5621136), (6, 4684280), (8, 3513210), (10, 2810568), (12, 2342140), (15, 1873712), (16, 1756605), (20, 1405284), (24, 1171070), (30, 936856), (40, 702642), (48, 585535), (60, 468428), (80, 351321), (120, 234214), (181, 155280), (240, 117107), (362, 77640), (543, 51760), (647, 43440), (724, 38820), (905, 31056), (1086, 25880), (1294, 21720), (1448, 19410), (1810, 15528), (1941, 14480), (2172, 12940), (2588, 10860), (2715, 10352), (2896, 9705), (3235, 8688), (3620, 7764), (3882, 7240), (4344, 6470), (5176, 5430)]