161820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:75

約数の個数: 72

約数和(自身を含む): 524160

約数和(自身を除く): 362340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 31, 36, 45, 58, 60, 62, 87, 90, 93, 116, 124, 145, 155, 174, 180, 186, 261, 279, 290, 310, 348, 372, 435, 465, 522, 558, 580, 620, 870, 899, 930, 1044, 1116, 1305, 1395, 1740, 1798, 1860, 2610, 2697, 2790, 3596, 4495, 5220, 5394, 5580, 8091, 8990, 10788, 13485, 16182, 17980, 26970, 32364, 40455, 53940, 80910, 161820]

約数ペア:

[(1, 161820), (2, 80910), (3, 53940), (4, 40455), (5, 32364), (6, 26970), (9, 17980), (10, 16182), (12, 13485), (15, 10788), (18, 8990), (20, 8091), (29, 5580), (30, 5394), (31, 5220), (36, 4495), (45, 3596), (58, 2790), (60, 2697), (62, 2610), (87, 1860), (90, 1798), (93, 1740), (116, 1395), (124, 1305), (145, 1116), (155, 1044), (174, 930), (180, 899), (186, 870), (261, 620), (279, 580), (290, 558), (310, 522), (348, 465), (372, 435)]