638577990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{228881}}^1$

素因数の和:228925

約数の個数: 48

約数和(自身を含む): 1713868416

約数和(自身を除く): 1075290426

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 228881, 457762, 686643, 1144405, 1373286, 2059929, 2288810, 3433215, 4119858, 6866430, 7095311, 10299645, 14190622, 20599290, 21285933, 35476555, 42571866, 63857799, 70953110, 106429665, 127715598, 212859330, 319288995, 638577990]

約数ペア:

[(1, 638577990), (2, 319288995), (3, 212859330), (5, 127715598), (6, 106429665), (9, 70953110), (10, 63857799), (15, 42571866), (18, 35476555), (30, 21285933), (31, 20599290), (45, 14190622), (62, 10299645), (90, 7095311), (93, 6866430), (155, 4119858), (186, 3433215), (279, 2288810), (310, 2059929), (465, 1373286), (558, 1144405), (930, 686643), (1395, 457762), (2790, 228881)]