80421720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1$

素因数の和:417

約数の個数: 128

約数和(自身を含む): 252806400

約数和(自身を除く): 172384680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 59, 60, 74, 111, 118, 120, 148, 177, 185, 222, 236, 295, 296, 307, 354, 370, 444, 472, 555, 590, 614, 708, 740, 885, 888, 921, 1110, 1180, 1228, 1416, 1480, 1535, 1770, 1842, 2183, 2220, 2360, 2456, 3070, 3540, 3684, 4366, 4440, 4605, 6140, 6549, 7080, 7368, 8732, 9210, 10915, 11359, 12280, 13098, 17464, 18113, 18420, 21830, 22718, 26196, 32745, 34077, 36226, 36840, 43660, 45436, 52392, 54339, 56795, 65490, 68154, 72452, 87320, 90565, 90872, 108678, 113590, 130980, 136308, 144904, 170385, 181130, 217356, 227180, 261960, 271695, 272616, 340770, 362260, 434712, 454360, 543390, 670181, 681540, 724520, 1086780, 1340362, 1363080, 2010543, 2173560, 2680724, 3350905, 4021086, 5361448, 6701810, 8042172, 10052715, 13403620, 16084344, 20105430, 26807240, 40210860, 80421720]

約数ペア:

[(1, 80421720), (2, 40210860), (3, 26807240), (4, 20105430), (5, 16084344), (6, 13403620), (8, 10052715), (10, 8042172), (12, 6701810), (15, 5361448), (20, 4021086), (24, 3350905), (30, 2680724), (37, 2173560), (40, 2010543), (59, 1363080), (60, 1340362), (74, 1086780), (111, 724520), (118, 681540), (120, 670181), (148, 543390), (177, 454360), (185, 434712), (222, 362260), (236, 340770), (295, 272616), (296, 271695), (307, 261960), (354, 227180), (370, 217356), (444, 181130), (472, 170385), (555, 144904), (590, 136308), (614, 130980), (708, 113590), (740, 108678), (885, 90872), (888, 90565), (921, 87320), (1110, 72452), (1180, 68154), (1228, 65490), (1416, 56795), (1480, 54339), (1535, 52392), (1770, 45436), (1842, 43660), (2183, 36840), (2220, 36226), (2360, 34077), (2456, 32745), (3070, 26196), (3540, 22718), (3684, 21830), (4366, 18420), (4440, 18113), (4605, 17464), (6140, 13098), (6549, 12280), (7080, 11359), (7368, 10915), (8732, 9210)]