81356940

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{21523}}^1$

素因数の和:21548

約数の個数: 96

約数和(自身を含む): 289282560

約数和(自身を除く): 207925620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 21523, 43046, 64569, 86092, 107615, 129138, 150661, 193707, 215230, 258276, 301322, 322845, 387414, 430460, 451983, 581121, 602644, 645690, 753305, 774828, 903966, 968535, 1162242, 1291380, 1355949, 1506610, 1807932, 1937070, 2259915, 2324484, 2711898, 2905605, 3013220, 3874140, 4067847, 4519830, 5423796, 5811210, 6779745, 8135694, 9039660, 11622420, 13559490, 16271388, 20339235, 27118980, 40678470, 81356940]

約数ペア:

[(1, 81356940), (2, 40678470), (3, 27118980), (4, 20339235), (5, 16271388), (6, 13559490), (7, 11622420), (9, 9039660), (10, 8135694), (12, 6779745), (14, 5811210), (15, 5423796), (18, 4519830), (20, 4067847), (21, 3874140), (27, 3013220), (28, 2905605), (30, 2711898), (35, 2324484), (36, 2259915), (42, 1937070), (45, 1807932), (54, 1506610), (60, 1355949), (63, 1291380), (70, 1162242), (84, 968535), (90, 903966), (105, 774828), (108, 753305), (126, 645690), (135, 602644), (140, 581121), (180, 451983), (189, 430460), (210, 387414), (252, 322845), (270, 301322), (315, 258276), (378, 215230), (420, 193707), (540, 150661), (630, 129138), (756, 107615), (945, 86092), (1260, 64569), (1890, 43046), (3780, 21523)]