78406860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{26669}}^1$

素因数の和:26695

約数の個数: 72

約数和(自身を含む): 255391920

約数和(自身を除く): 176985060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 26669, 53338, 80007, 106676, 133345, 160014, 186683, 266690, 320028, 373366, 400035, 533380, 560049, 746732, 800070, 933415, 1120098, 1306781, 1600140, 1866830, 2240196, 2613562, 2800245, 3733660, 3920343, 5227124, 5600490, 6533905, 7840686, 11200980, 13067810, 15681372, 19601715, 26135620, 39203430, 78406860]

約数ペア:

[(1, 78406860), (2, 39203430), (3, 26135620), (4, 19601715), (5, 15681372), (6, 13067810), (7, 11200980), (10, 7840686), (12, 6533905), (14, 5600490), (15, 5227124), (20, 3920343), (21, 3733660), (28, 2800245), (30, 2613562), (35, 2240196), (42, 1866830), (49, 1600140), (60, 1306781), (70, 1120098), (84, 933415), (98, 800070), (105, 746732), (140, 560049), (147, 533380), (196, 400035), (210, 373366), (245, 320028), (294, 266690), (420, 186683), (490, 160014), (588, 133345), (735, 106676), (980, 80007), (1470, 53338), (2940, 26669)]