19505640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2111}}^1$

素因数の和:2143

約数の個数: 128

約数和(自身を含む): 72990720

約数和(自身を除く): 53485080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2111, 2310, 3080, 4222, 4620, 6333, 8444, 9240, 10555, 12666, 14777, 16888, 21110, 23221, 25332, 29554, 31665, 42220, 44331, 46442, 50664, 59108, 63330, 69663, 73885, 84440, 88662, 92884, 116105, 118216, 126660, 139326, 147770, 162547, 177324, 185768, 221655, 232210, 253320, 278652, 295540, 325094, 348315, 354648, 443310, 464420, 487641, 557304, 591080, 650188, 696630, 812735, 886620, 928840, 975282, 1300376, 1393260, 1625470, 1773240, 1950564, 2438205, 2786520, 3250940, 3901128, 4876410, 6501880, 9752820, 19505640]

約数ペア:

[(1, 19505640), (2, 9752820), (3, 6501880), (4, 4876410), (5, 3901128), (6, 3250940), (7, 2786520), (8, 2438205), (10, 1950564), (11, 1773240), (12, 1625470), (14, 1393260), (15, 1300376), (20, 975282), (21, 928840), (22, 886620), (24, 812735), (28, 696630), (30, 650188), (33, 591080), (35, 557304), (40, 487641), (42, 464420), (44, 443310), (55, 354648), (56, 348315), (60, 325094), (66, 295540), (70, 278652), (77, 253320), (84, 232210), (88, 221655), (105, 185768), (110, 177324), (120, 162547), (132, 147770), (140, 139326), (154, 126660), (165, 118216), (168, 116105), (210, 92884), (220, 88662), (231, 84440), (264, 73885), (280, 69663), (308, 63330), (330, 59108), (385, 50664), (420, 46442), (440, 44331), (462, 42220), (616, 31665), (660, 29554), (770, 25332), (840, 23221), (924, 21110), (1155, 16888), (1320, 14777), (1540, 12666), (1848, 10555), (2111, 9240), (2310, 8444), (3080, 6333), (4222, 4620)]