18642780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1$

素因数の和:316

約数の個数: 144

約数和(自身を含む): 63108864

約数和(自身を除く): 44466084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 31, 36, 39, 45, 52, 60, 62, 65, 78, 90, 93, 117, 124, 130, 155, 156, 180, 186, 195, 234, 257, 260, 279, 310, 372, 390, 403, 465, 468, 514, 558, 585, 620, 771, 780, 806, 930, 1028, 1116, 1170, 1209, 1285, 1395, 1542, 1612, 1860, 2015, 2313, 2340, 2418, 2570, 2790, 3084, 3341, 3627, 3855, 4030, 4626, 4836, 5140, 5580, 6045, 6682, 7254, 7710, 7967, 8060, 9252, 10023, 11565, 12090, 13364, 14508, 15420, 15934, 16705, 18135, 20046, 23130, 23901, 24180, 30069, 31868, 33410, 36270, 39835, 40092, 46260, 47802, 50115, 60138, 66820, 71703, 72540, 79670, 95604, 100230, 103571, 119505, 120276, 143406, 150345, 159340, 200460, 207142, 239010, 286812, 300690, 310713, 358515, 414284, 478020, 517855, 601380, 621426, 717030, 932139, 1035710, 1242852, 1434060, 1553565, 1864278, 2071420, 3107130, 3728556, 4660695, 6214260, 9321390, 18642780]

約数ペア:

[(1, 18642780), (2, 9321390), (3, 6214260), (4, 4660695), (5, 3728556), (6, 3107130), (9, 2071420), (10, 1864278), (12, 1553565), (13, 1434060), (15, 1242852), (18, 1035710), (20, 932139), (26, 717030), (30, 621426), (31, 601380), (36, 517855), (39, 478020), (45, 414284), (52, 358515), (60, 310713), (62, 300690), (65, 286812), (78, 239010), (90, 207142), (93, 200460), (117, 159340), (124, 150345), (130, 143406), (155, 120276), (156, 119505), (180, 103571), (186, 100230), (195, 95604), (234, 79670), (257, 72540), (260, 71703), (279, 66820), (310, 60138), (372, 50115), (390, 47802), (403, 46260), (465, 40092), (468, 39835), (514, 36270), (558, 33410), (585, 31868), (620, 30069), (771, 24180), (780, 23901), (806, 23130), (930, 20046), (1028, 18135), (1116, 16705), (1170, 15934), (1209, 15420), (1285, 14508), (1395, 13364), (1542, 12090), (1612, 11565), (1860, 10023), (2015, 9252), (2313, 8060), (2340, 7967), (2418, 7710), (2570, 7254), (2790, 6682), (3084, 6045), (3341, 5580), (3627, 5140), (3855, 4836), (4030, 4626)]