20152480

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:302

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 32102240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 68, 80, 85, 124, 136, 155, 160, 170, 239, 248, 272, 310, 340, 478, 496, 527, 544, 620, 680, 956, 992, 1054, 1195, 1240, 1360, 1912, 2108, 2390, 2480, 2635, 2720, 3824, 4063, 4216, 4780, 4960, 5270, 7409, 7648, 8126, 8432, 9560, 10540, 14818, 16252, 16864, 19120, 20315, 21080, 29636, 32504, 37045, 38240, 40630, 42160, 59272, 65008, 74090, 81260, 84320, 118544, 125953, 130016, 148180, 162520, 237088, 251906, 296360, 325040, 503812, 592720, 629765, 650080, 1007624, 1185440, 1259530, 2015248, 2519060, 4030496, 5038120, 10076240, 20152480]

約数ペア:

[(1, 20152480), (2, 10076240), (4, 5038120), (5, 4030496), (8, 2519060), (10, 2015248), (16, 1259530), (17, 1185440), (20, 1007624), (31, 650080), (32, 629765), (34, 592720), (40, 503812), (62, 325040), (68, 296360), (80, 251906), (85, 237088), (124, 162520), (136, 148180), (155, 130016), (160, 125953), (170, 118544), (239, 84320), (248, 81260), (272, 74090), (310, 65008), (340, 59272), (478, 42160), (496, 40630), (527, 38240), (544, 37045), (620, 32504), (680, 29636), (956, 21080), (992, 20315), (1054, 19120), (1195, 16864), (1240, 16252), (1360, 14818), (1912, 10540), (2108, 9560), (2390, 8432), (2480, 8126), (2635, 7648), (2720, 7409), (3824, 5270), (4063, 4960), (4216, 4780)]