21454160

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{421}}^1$

素因数の和:461

約数の個数: 120

約数和(自身を含む): 62636616

約数和(自身を除く): 41182456

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 392, 421, 455, 490, 520, 560, 637, 728, 784, 842, 910, 980, 1040, 1274, 1456, 1684, 1820, 1960, 2105, 2548, 2947, 3185, 3368, 3640, 3920, 4210, 5096, 5473, 5894, 6370, 6736, 7280, 8420, 10192, 10946, 11788, 12740, 14735, 16840, 20629, 21892, 23576, 25480, 27365, 29470, 33680, 38311, 41258, 43784, 47152, 50960, 54730, 58940, 76622, 82516, 87568, 103145, 109460, 117880, 153244, 165032, 191555, 206290, 218920, 235760, 268177, 306488, 330064, 383110, 412580, 437840, 536354, 612976, 766220, 825160, 1072708, 1340885, 1532440, 1650320, 2145416, 2681770, 3064880, 4290832, 5363540, 10727080, 21454160]

約数ペア:

[(1, 21454160), (2, 10727080), (4, 5363540), (5, 4290832), (7, 3064880), (8, 2681770), (10, 2145416), (13, 1650320), (14, 1532440), (16, 1340885), (20, 1072708), (26, 825160), (28, 766220), (35, 612976), (40, 536354), (49, 437840), (52, 412580), (56, 383110), (65, 330064), (70, 306488), (80, 268177), (91, 235760), (98, 218920), (104, 206290), (112, 191555), (130, 165032), (140, 153244), (182, 117880), (196, 109460), (208, 103145), (245, 87568), (260, 82516), (280, 76622), (364, 58940), (392, 54730), (421, 50960), (455, 47152), (490, 43784), (520, 41258), (560, 38311), (637, 33680), (728, 29470), (784, 27365), (842, 25480), (910, 23576), (980, 21892), (1040, 20629), (1274, 16840), (1456, 14735), (1684, 12740), (1820, 11788), (1960, 10946), (2105, 10192), (2548, 8420), (2947, 7280), (3185, 6736), (3368, 6370), (3640, 5894), (3920, 5473), (4210, 5096)]