21018348

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{463}}^1$

素因数の和:583

約数の個数: 72

約数和(自身を含む): 57931328

約数和(自身を除く): 36912980

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 97, 117, 156, 194, 234, 291, 388, 463, 468, 582, 873, 926, 1164, 1261, 1389, 1746, 1852, 2522, 2778, 3492, 3783, 4167, 5044, 5556, 6019, 7566, 8334, 11349, 12038, 15132, 16668, 18057, 22698, 24076, 36114, 44911, 45396, 54171, 72228, 89822, 108342, 134733, 179644, 216684, 269466, 404199, 538932, 583843, 808398, 1167686, 1616796, 1751529, 2335372, 3503058, 5254587, 7006116, 10509174, 21018348]

約数ペア:

[(1, 21018348), (2, 10509174), (3, 7006116), (4, 5254587), (6, 3503058), (9, 2335372), (12, 1751529), (13, 1616796), (18, 1167686), (26, 808398), (36, 583843), (39, 538932), (52, 404199), (78, 269466), (97, 216684), (117, 179644), (156, 134733), (194, 108342), (234, 89822), (291, 72228), (388, 54171), (463, 45396), (468, 44911), (582, 36114), (873, 24076), (926, 22698), (1164, 18057), (1261, 16668), (1389, 15132), (1746, 12038), (1852, 11349), (2522, 8334), (2778, 7566), (3492, 6019), (3783, 5556), (4167, 5044)]