21978904560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{397}}^1\times {\mathrm{593}}^1$

素因数の和:1395

約数の個数: 160

約数和(自身を含む): 68597305920

約数和(自身を除く): 46618401360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 389, 397, 593, 778, 794, 1167, 1186, 1191, 1556, 1588, 1779, 1945, 1985, 2334, 2372, 2382, 2965, 3112, 3176, 3558, 3890, 3970, 4668, 4744, 4764, 5835, 5930, 5955, 6224, 6352, 7116, 7780, 7940, 8895, 9336, 9488, 9528, 11670, 11860, 11910, 14232, 15560, 15880, 17790, 18672, 19056, 23340, 23720, 23820, 28464, 31120, 31760, 35580, 46680, 47440, 47640, 71160, 93360, 95280, 142320, 154433, 230677, 235421, 308866, 461354, 463299, 470842, 617732, 692031, 706263, 772165, 922708, 926598, 941684, 1153385, 1177105, 1235464, 1384062, 1412526, 1544330, 1845416, 1853196, 1883368, 2306770, 2316495, 2354210, 2470928, 2768124, 2825052, 3088660, 3460155, 3531315, 3690832, 3706392, 3766736, 4613540, 4632990, 4708420, 5536248, 5650104, 6177320, 6920310, 7062630, 7412784, 9227080, 9265980, 9416840, 11072496, 11300208, 12354640, 13840620, 14125260, 18454160, 18531960, 18833680, 27681240, 28250520, 37063920, 55362480, 56501040, 91578769, 183157538, 274736307, 366315076, 457893845, 549472614, 732630152, 915787690, 1098945228, 1373681535, 1465260304, 1831575380, 2197890456, 2747363070, 3663150760, 4395780912, 5494726140, 7326301520, 10989452280, 21978904560]

約数ペア:

[(1, 21978904560), (2, 10989452280), (3, 7326301520), (4, 5494726140), (5, 4395780912), (6, 3663150760), (8, 2747363070), (10, 2197890456), (12, 1831575380), (15, 1465260304), (16, 1373681535), (20, 1098945228), (24, 915787690), (30, 732630152), (40, 549472614), (48, 457893845), (60, 366315076), (80, 274736307), (120, 183157538), (240, 91578769), (389, 56501040), (397, 55362480), (593, 37063920), (778, 28250520), (794, 27681240), (1167, 18833680), (1186, 18531960), (1191, 18454160), (1556, 14125260), (1588, 13840620), (1779, 12354640), (1945, 11300208), (1985, 11072496), (2334, 9416840), (2372, 9265980), (2382, 9227080), (2965, 7412784), (3112, 7062630), (3176, 6920310), (3558, 6177320), (3890, 5650104), (3970, 5536248), (4668, 4708420), (4744, 4632990), (4764, 4613540), (5835, 3766736), (5930, 3706392), (5955, 3690832), (6224, 3531315), (6352, 3460155), (7116, 3088660), (7780, 2825052), (7940, 2768124), (8895, 2470928), (9336, 2354210), (9488, 2316495), (9528, 2306770), (11670, 1883368), (11860, 1853196), (11910, 1845416), (14232, 1544330), (15560, 1412526), (15880, 1384062), (17790, 1235464), (18672, 1177105), (19056, 1153385), (23340, 941684), (23720, 926598), (23820, 922708), (28464, 772165), (31120, 706263), (31760, 692031), (35580, 617732), (46680, 470842), (47440, 463299), (47640, 461354), (71160, 308866), (93360, 235421), (95280, 230677), (142320, 154433)]