638941992

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{2131}}^1$

素因数の和:2215

約数の個数: 96

約数和(自身を含む): 1778343840

約数和(自身を除く): 1139401848

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 31, 39, 52, 62, 78, 93, 104, 124, 156, 186, 248, 312, 372, 403, 744, 806, 961, 1209, 1612, 1922, 2131, 2418, 2883, 3224, 3844, 4262, 4836, 5766, 6393, 7688, 8524, 9672, 11532, 12493, 12786, 17048, 23064, 24986, 25572, 27703, 37479, 49972, 51144, 55406, 66061, 74958, 83109, 99944, 110812, 132122, 149916, 166218, 198183, 221624, 264244, 299832, 332436, 396366, 528488, 664872, 792732, 858793, 1585464, 1717586, 2047891, 2576379, 3435172, 4095782, 5152758, 6143673, 6870344, 8191564, 10305516, 12287346, 16383128, 20611032, 24574692, 26622583, 49149384, 53245166, 79867749, 106490332, 159735498, 212980664, 319470996, 638941992]

約数ペア:

[(1, 638941992), (2, 319470996), (3, 212980664), (4, 159735498), (6, 106490332), (8, 79867749), (12, 53245166), (13, 49149384), (24, 26622583), (26, 24574692), (31, 20611032), (39, 16383128), (52, 12287346), (62, 10305516), (78, 8191564), (93, 6870344), (104, 6143673), (124, 5152758), (156, 4095782), (186, 3435172), (248, 2576379), (312, 2047891), (372, 1717586), (403, 1585464), (744, 858793), (806, 792732), (961, 664872), (1209, 528488), (1612, 396366), (1922, 332436), (2131, 299832), (2418, 264244), (2883, 221624), (3224, 198183), (3844, 166218), (4262, 149916), (4836, 132122), (5766, 110812), (6393, 99944), (7688, 83109), (8524, 74958), (9672, 66061), (11532, 55406), (12493, 51144), (12786, 49972), (17048, 37479), (23064, 27703), (24986, 25572)]