821404680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1\times {\mathrm{421}}^1$

素因数の和:735

約数の個数: 128

約数和(自身を含む): 2515795200

約数和(自身を除く): 1694390520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 229, 284, 355, 421, 426, 458, 568, 687, 710, 842, 852, 916, 1065, 1145, 1263, 1374, 1420, 1684, 1704, 1832, 2105, 2130, 2290, 2526, 2748, 2840, 3368, 3435, 4210, 4260, 4580, 5052, 5496, 6315, 6870, 8420, 8520, 9160, 10104, 12630, 13740, 16259, 16840, 25260, 27480, 29891, 32518, 48777, 50520, 59782, 65036, 81295, 89673, 96409, 97554, 119564, 130072, 149455, 162590, 179346, 192818, 195108, 239128, 243885, 289227, 298910, 325180, 358692, 385636, 390216, 448365, 482045, 487770, 578454, 597820, 650360, 717384, 771272, 896730, 964090, 975540, 1156908, 1195640, 1446135, 1793460, 1928180, 1951080, 2313816, 2892270, 3586920, 3856360, 5784540, 6845039, 11569080, 13690078, 20535117, 27380156, 34225195, 41070234, 54760312, 68450390, 82140468, 102675585, 136900780, 164280936, 205351170, 273801560, 410702340, 821404680]

約数ペア:

[(1, 821404680), (2, 410702340), (3, 273801560), (4, 205351170), (5, 164280936), (6, 136900780), (8, 102675585), (10, 82140468), (12, 68450390), (15, 54760312), (20, 41070234), (24, 34225195), (30, 27380156), (40, 20535117), (60, 13690078), (71, 11569080), (120, 6845039), (142, 5784540), (213, 3856360), (229, 3586920), (284, 2892270), (355, 2313816), (421, 1951080), (426, 1928180), (458, 1793460), (568, 1446135), (687, 1195640), (710, 1156908), (842, 975540), (852, 964090), (916, 896730), (1065, 771272), (1145, 717384), (1263, 650360), (1374, 597820), (1420, 578454), (1684, 487770), (1704, 482045), (1832, 448365), (2105, 390216), (2130, 385636), (2290, 358692), (2526, 325180), (2748, 298910), (2840, 289227), (3368, 243885), (3435, 239128), (4210, 195108), (4260, 192818), (4580, 179346), (5052, 162590), (5496, 149455), (6315, 130072), (6870, 119564), (8420, 97554), (8520, 96409), (9160, 89673), (10104, 81295), (12630, 65036), (13740, 59782), (16259, 50520), (16840, 48777), (25260, 32518), (27480, 29891)]