1990291240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{89977}}^1$

素因数の和:90074

約数の個数: 64

約数和(自身を含む): 5182732800

約数和(自身を除く): 3192441560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 1106, 1580, 2212, 2765, 3160, 4424, 5530, 11060, 22120, 89977, 179954, 359908, 449885, 629839, 719816, 899770, 1259678, 1799540, 2519356, 3149195, 3599080, 5038712, 6298390, 7108183, 12596780, 14216366, 25193560, 28432732, 35540915, 49757281, 56865464, 71081830, 99514562, 142163660, 199029124, 248786405, 284327320, 398058248, 497572810, 995145620, 1990291240]

約数ペア:

[(1, 1990291240), (2, 995145620), (4, 497572810), (5, 398058248), (7, 284327320), (8, 248786405), (10, 199029124), (14, 142163660), (20, 99514562), (28, 71081830), (35, 56865464), (40, 49757281), (56, 35540915), (70, 28432732), (79, 25193560), (140, 14216366), (158, 12596780), (280, 7108183), (316, 6298390), (395, 5038712), (553, 3599080), (632, 3149195), (790, 2519356), (1106, 1799540), (1580, 1259678), (2212, 899770), (2765, 719816), (3160, 629839), (4424, 449885), (5530, 359908), (11060, 179954), (22120, 89977)]