20841720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:209

約数の個数: 128

約数和(自身を含む): 66484800

約数和(自身を除く): 45643080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 53, 58, 60, 87, 106, 113, 116, 120, 145, 159, 174, 212, 226, 232, 265, 290, 318, 339, 348, 424, 435, 452, 530, 565, 580, 636, 678, 696, 795, 870, 904, 1060, 1130, 1160, 1272, 1356, 1537, 1590, 1695, 1740, 2120, 2260, 2712, 3074, 3180, 3277, 3390, 3480, 4520, 4611, 5989, 6148, 6360, 6554, 6780, 7685, 9222, 9831, 11978, 12296, 13108, 13560, 15370, 16385, 17967, 18444, 19662, 23055, 23956, 26216, 29945, 30740, 32770, 35934, 36888, 39324, 46110, 47912, 49155, 59890, 61480, 65540, 71868, 78648, 89835, 92220, 98310, 119780, 131080, 143736, 173681, 179670, 184440, 196620, 239560, 347362, 359340, 393240, 521043, 694724, 718680, 868405, 1042086, 1389448, 1736810, 2084172, 2605215, 3473620, 4168344, 5210430, 6947240, 10420860, 20841720]

約数ペア:

[(1, 20841720), (2, 10420860), (3, 6947240), (4, 5210430), (5, 4168344), (6, 3473620), (8, 2605215), (10, 2084172), (12, 1736810), (15, 1389448), (20, 1042086), (24, 868405), (29, 718680), (30, 694724), (40, 521043), (53, 393240), (58, 359340), (60, 347362), (87, 239560), (106, 196620), (113, 184440), (116, 179670), (120, 173681), (145, 143736), (159, 131080), (174, 119780), (212, 98310), (226, 92220), (232, 89835), (265, 78648), (290, 71868), (318, 65540), (339, 61480), (348, 59890), (424, 49155), (435, 47912), (452, 46110), (530, 39324), (565, 36888), (580, 35934), (636, 32770), (678, 30740), (696, 29945), (795, 26216), (870, 23956), (904, 23055), (1060, 19662), (1130, 18444), (1160, 17967), (1272, 16385), (1356, 15370), (1537, 13560), (1590, 13108), (1695, 12296), (1740, 11978), (2120, 9831), (2260, 9222), (2712, 7685), (3074, 6780), (3180, 6554), (3277, 6360), (3390, 6148), (3480, 5989), (4520, 4611)]