20451132

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:603

約数の個数: 72

約数和(自身を含む): 56412720

約数和(自身を除く): 35961588

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 89, 117, 156, 178, 234, 267, 356, 468, 491, 534, 801, 982, 1068, 1157, 1473, 1602, 1964, 2314, 2946, 3204, 3471, 4419, 4628, 5892, 6383, 6942, 8838, 10413, 12766, 13884, 17676, 19149, 20826, 25532, 38298, 41652, 43699, 57447, 76596, 87398, 114894, 131097, 174796, 229788, 262194, 393291, 524388, 568087, 786582, 1136174, 1573164, 1704261, 2272348, 3408522, 5112783, 6817044, 10225566, 20451132]

約数ペア:

[(1, 20451132), (2, 10225566), (3, 6817044), (4, 5112783), (6, 3408522), (9, 2272348), (12, 1704261), (13, 1573164), (18, 1136174), (26, 786582), (36, 568087), (39, 524388), (52, 393291), (78, 262194), (89, 229788), (117, 174796), (156, 131097), (178, 114894), (234, 87398), (267, 76596), (356, 57447), (468, 43699), (491, 41652), (534, 38298), (801, 25532), (982, 20826), (1068, 19149), (1157, 17676), (1473, 13884), (1602, 12766), (1964, 10413), (2314, 8838), (2946, 6942), (3204, 6383), (3471, 5892), (4419, 4628)]