20459504

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:238

約数の個数: 80

約数和(自身を含む): 46663680

約数和(自身を除く): 26204176

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 31, 38, 52, 62, 76, 104, 124, 152, 167, 208, 247, 248, 304, 334, 403, 494, 496, 589, 668, 806, 988, 1178, 1336, 1612, 1976, 2171, 2356, 2672, 3173, 3224, 3952, 4342, 4712, 5177, 6346, 6448, 7657, 8684, 9424, 10354, 12692, 15314, 17368, 20708, 25384, 30628, 34736, 41249, 41416, 50768, 61256, 67301, 82498, 82832, 98363, 122512, 134602, 164996, 196726, 269204, 329992, 393452, 538408, 659984, 786904, 1076816, 1278719, 1573808, 2557438, 5114876, 10229752, 20459504]

約数ペア:

[(1, 20459504), (2, 10229752), (4, 5114876), (8, 2557438), (13, 1573808), (16, 1278719), (19, 1076816), (26, 786904), (31, 659984), (38, 538408), (52, 393452), (62, 329992), (76, 269204), (104, 196726), (124, 164996), (152, 134602), (167, 122512), (208, 98363), (247, 82832), (248, 82498), (304, 67301), (334, 61256), (403, 50768), (494, 41416), (496, 41249), (589, 34736), (668, 30628), (806, 25384), (988, 20708), (1178, 17368), (1336, 15314), (1612, 12692), (1976, 10354), (2171, 9424), (2356, 8684), (2672, 7657), (3173, 6448), (3224, 6346), (3952, 5177), (4342, 4712)]