20567760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1993}}^1$

素因数の和:2052

約数の個数: 80

約数和(自身を含む): 65275584

約数和(自身を除く): 44707824

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 1993, 2064, 2580, 3440, 3986, 5160, 5979, 7972, 9965, 10320, 11958, 15944, 19930, 23916, 29895, 31888, 39860, 47832, 59790, 79720, 85699, 95664, 119580, 159440, 171398, 239160, 257097, 342796, 428495, 478320, 514194, 685592, 856990, 1028388, 1285485, 1371184, 1713980, 2056776, 2570970, 3427960, 4113552, 5141940, 6855920, 10283880, 20567760]

約数ペア:

[(1, 20567760), (2, 10283880), (3, 6855920), (4, 5141940), (5, 4113552), (6, 3427960), (8, 2570970), (10, 2056776), (12, 1713980), (15, 1371184), (16, 1285485), (20, 1028388), (24, 856990), (30, 685592), (40, 514194), (43, 478320), (48, 428495), (60, 342796), (80, 257097), (86, 239160), (120, 171398), (129, 159440), (172, 119580), (215, 95664), (240, 85699), (258, 79720), (344, 59790), (430, 47832), (516, 39860), (645, 31888), (688, 29895), (860, 23916), (1032, 19930), (1290, 15944), (1720, 11958), (1993, 10320), (2064, 9965), (2580, 7972), (3440, 5979), (3986, 5160)]