20468988

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:511

約数の個数: 72

約数和(自身を含む): 55036800

約数和(自身を除く): 34567812

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 59, 69, 92, 118, 138, 177, 207, 236, 276, 354, 414, 419, 531, 708, 828, 838, 1062, 1257, 1357, 1676, 2124, 2514, 2714, 3771, 4071, 5028, 5428, 7542, 8142, 9637, 12213, 15084, 16284, 19274, 24426, 24721, 28911, 38548, 48852, 49442, 57822, 74163, 86733, 98884, 115644, 148326, 173466, 222489, 296652, 346932, 444978, 568583, 889956, 1137166, 1705749, 2274332, 3411498, 5117247, 6822996, 10234494, 20468988]

約数ペア:

[(1, 20468988), (2, 10234494), (3, 6822996), (4, 5117247), (6, 3411498), (9, 2274332), (12, 1705749), (18, 1137166), (23, 889956), (36, 568583), (46, 444978), (59, 346932), (69, 296652), (92, 222489), (118, 173466), (138, 148326), (177, 115644), (207, 98884), (236, 86733), (276, 74163), (354, 57822), (414, 49442), (419, 48852), (531, 38548), (708, 28911), (828, 24721), (838, 24426), (1062, 19274), (1257, 16284), (1357, 15084), (1676, 12213), (2124, 9637), (2514, 8142), (2714, 7542), (3771, 5428), (4071, 5028)]