21409080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{331}}^1$

素因数の和:370

約数の個数: 192

約数和(自身を含む): 81751680

約数和(自身を除く): 60342600

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, 49, 55, 56, 60, 66, 70, 77, 84, 88, 98, 105, 110, 120, 132, 140, 147, 154, 165, 168, 196, 210, 220, 231, 245, 264, 280, 294, 308, 330, 331, 385, 392, 420, 440, 462, 490, 539, 588, 616, 660, 662, 735, 770, 840, 924, 980, 993, 1078, 1155, 1176, 1320, 1324, 1470, 1540, 1617, 1655, 1848, 1960, 1986, 2156, 2310, 2317, 2648, 2695, 2940, 3080, 3234, 3310, 3641, 3972, 4312, 4620, 4634, 4965, 5390, 5880, 6468, 6620, 6951, 7282, 7944, 8085, 9240, 9268, 9930, 10780, 10923, 11585, 12936, 13240, 13902, 14564, 16170, 16219, 18205, 18536, 19860, 21560, 21846, 23170, 25487, 27804, 29128, 32340, 32438, 34755, 36410, 39720, 43692, 46340, 48657, 50974, 54615, 55608, 64680, 64876, 69510, 72820, 76461, 81095, 87384, 92680, 97314, 101948, 109230, 127435, 129752, 139020, 145640, 152922, 162190, 178409, 194628, 203896, 218460, 243285, 254870, 278040, 305844, 324380, 356818, 382305, 389256, 436920, 486570, 509740, 535227, 611688, 648760, 713636, 764610, 892045, 973140, 1019480, 1070454, 1427272, 1529220, 1784090, 1946280, 2140908, 2676135, 3058440, 3568180, 4281816, 5352270, 7136360, 10704540, 21409080]

約数ペア:

[(1, 21409080), (2, 10704540), (3, 7136360), (4, 5352270), (5, 4281816), (6, 3568180), (7, 3058440), (8, 2676135), (10, 2140908), (11, 1946280), (12, 1784090), (14, 1529220), (15, 1427272), (20, 1070454), (21, 1019480), (22, 973140), (24, 892045), (28, 764610), (30, 713636), (33, 648760), (35, 611688), (40, 535227), (42, 509740), (44, 486570), (49, 436920), (55, 389256), (56, 382305), (60, 356818), (66, 324380), (70, 305844), (77, 278040), (84, 254870), (88, 243285), (98, 218460), (105, 203896), (110, 194628), (120, 178409), (132, 162190), (140, 152922), (147, 145640), (154, 139020), (165, 129752), (168, 127435), (196, 109230), (210, 101948), (220, 97314), (231, 92680), (245, 87384), (264, 81095), (280, 76461), (294, 72820), (308, 69510), (330, 64876), (331, 64680), (385, 55608), (392, 54615), (420, 50974), (440, 48657), (462, 46340), (490, 43692), (539, 39720), (588, 36410), (616, 34755), (660, 32438), (662, 32340), (735, 29128), (770, 27804), (840, 25487), (924, 23170), (980, 21846), (993, 21560), (1078, 19860), (1155, 18536), (1176, 18205), (1320, 16219), (1324, 16170), (1470, 14564), (1540, 13902), (1617, 13240), (1655, 12936), (1848, 11585), (1960, 10923), (1986, 10780), (2156, 9930), (2310, 9268), (2317, 9240), (2648, 8085), (2695, 7944), (2940, 7282), (3080, 6951), (3234, 6620), (3310, 6468), (3641, 5880), (3972, 5390), (4312, 4965), (4620, 4634)]