20688160

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:186

約数の個数: 96

約数和(自身を含む): 52157952

約数和(自身を除く): 31469792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 43, 62, 80, 86, 97, 124, 155, 160, 172, 194, 215, 248, 310, 344, 388, 430, 485, 496, 620, 688, 776, 860, 970, 992, 1240, 1333, 1376, 1552, 1720, 1940, 2480, 2666, 3007, 3104, 3440, 3880, 4171, 4960, 5332, 6014, 6665, 6880, 7760, 8342, 10664, 12028, 13330, 15035, 15520, 16684, 20855, 21328, 24056, 26660, 30070, 33368, 41710, 42656, 48112, 53320, 60140, 66736, 83420, 96224, 106640, 120280, 129301, 133472, 166840, 213280, 240560, 258602, 333680, 481120, 517204, 646505, 667360, 1034408, 1293010, 2068816, 2586020, 4137632, 5172040, 10344080, 20688160]

約数ペア:

[(1, 20688160), (2, 10344080), (4, 5172040), (5, 4137632), (8, 2586020), (10, 2068816), (16, 1293010), (20, 1034408), (31, 667360), (32, 646505), (40, 517204), (43, 481120), (62, 333680), (80, 258602), (86, 240560), (97, 213280), (124, 166840), (155, 133472), (160, 129301), (172, 120280), (194, 106640), (215, 96224), (248, 83420), (310, 66736), (344, 60140), (388, 53320), (430, 48112), (485, 42656), (496, 41710), (620, 33368), (688, 30070), (776, 26660), (860, 24056), (970, 21328), (992, 20855), (1240, 16684), (1333, 15520), (1376, 15035), (1552, 13330), (1720, 12028), (1940, 10664), (2480, 8342), (2666, 7760), (3007, 6880), (3104, 6665), (3440, 6014), (3880, 5332), (4171, 4960)]