21987180

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2143}}^1$

素因数の和:2180

約数の個数: 96

約数和(自身を含む): 72038400

約数和(自身を除く): 50051220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 90, 95, 108, 114, 135, 171, 180, 190, 228, 270, 285, 342, 380, 513, 540, 570, 684, 855, 1026, 1140, 1710, 2052, 2143, 2565, 3420, 4286, 5130, 6429, 8572, 10260, 10715, 12858, 19287, 21430, 25716, 32145, 38574, 40717, 42860, 57861, 64290, 77148, 81434, 96435, 115722, 122151, 128580, 162868, 192870, 203585, 231444, 244302, 289305, 366453, 385740, 407170, 488604, 578610, 610755, 732906, 814340, 1099359, 1157220, 1221510, 1465812, 1832265, 2198718, 2443020, 3664530, 4397436, 5496795, 7329060, 10993590, 21987180]

約数ペア:

[(1, 21987180), (2, 10993590), (3, 7329060), (4, 5496795), (5, 4397436), (6, 3664530), (9, 2443020), (10, 2198718), (12, 1832265), (15, 1465812), (18, 1221510), (19, 1157220), (20, 1099359), (27, 814340), (30, 732906), (36, 610755), (38, 578610), (45, 488604), (54, 407170), (57, 385740), (60, 366453), (76, 289305), (90, 244302), (95, 231444), (108, 203585), (114, 192870), (135, 162868), (171, 128580), (180, 122151), (190, 115722), (228, 96435), (270, 81434), (285, 77148), (342, 64290), (380, 57861), (513, 42860), (540, 40717), (570, 38574), (684, 32145), (855, 25716), (1026, 21430), (1140, 19287), (1710, 12858), (2052, 10715), (2143, 10260), (2565, 8572), (3420, 6429), (4286, 5130)]