21201648

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:642

約数の個数: 80

約数和(自身を含む): 60058656

約数和(自身を除く): 38857008

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 61, 78, 104, 122, 156, 183, 208, 244, 312, 366, 488, 557, 624, 732, 793, 976, 1114, 1464, 1586, 1671, 2228, 2379, 2928, 3172, 3342, 4456, 4758, 6344, 6684, 7241, 8912, 9516, 12688, 13368, 14482, 19032, 21723, 26736, 28964, 33977, 38064, 43446, 57928, 67954, 86892, 101931, 115856, 135908, 173784, 203862, 271816, 347568, 407724, 441701, 543632, 815448, 883402, 1325103, 1630896, 1766804, 2650206, 3533608, 5300412, 7067216, 10600824, 21201648]

約数ペア:

[(1, 21201648), (2, 10600824), (3, 7067216), (4, 5300412), (6, 3533608), (8, 2650206), (12, 1766804), (13, 1630896), (16, 1325103), (24, 883402), (26, 815448), (39, 543632), (48, 441701), (52, 407724), (61, 347568), (78, 271816), (104, 203862), (122, 173784), (156, 135908), (183, 115856), (208, 101931), (244, 86892), (312, 67954), (366, 57928), (488, 43446), (557, 38064), (624, 33977), (732, 28964), (793, 26736), (976, 21723), (1114, 19032), (1464, 14482), (1586, 13368), (1671, 12688), (2228, 9516), (2379, 8912), (2928, 7241), (3172, 6684), (3342, 6344), (4456, 4758)]