21420204

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 58677696

約数和(自身を除く): 37257492

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 41, 51, 52, 68, 78, 82, 102, 123, 156, 164, 197, 204, 221, 246, 394, 442, 492, 533, 591, 663, 697, 788, 884, 1066, 1182, 1326, 1394, 1599, 2091, 2132, 2364, 2561, 2652, 2788, 3198, 3349, 4182, 5122, 6396, 6698, 7683, 8077, 8364, 9061, 10047, 10244, 13396, 15366, 16154, 18122, 20094, 24231, 27183, 30732, 32308, 36244, 40188, 43537, 48462, 54366, 87074, 96924, 105001, 108732, 130611, 137309, 174148, 210002, 261222, 274618, 315003, 411927, 420004, 522444, 549236, 630006, 823854, 1260012, 1647708, 1785017, 3570034, 5355051, 7140068, 10710102, 21420204]

約数ペア:

[(1, 21420204), (2, 10710102), (3, 7140068), (4, 5355051), (6, 3570034), (12, 1785017), (13, 1647708), (17, 1260012), (26, 823854), (34, 630006), (39, 549236), (41, 522444), (51, 420004), (52, 411927), (68, 315003), (78, 274618), (82, 261222), (102, 210002), (123, 174148), (156, 137309), (164, 130611), (197, 108732), (204, 105001), (221, 96924), (246, 87074), (394, 54366), (442, 48462), (492, 43537), (533, 40188), (591, 36244), (663, 32308), (697, 30732), (788, 27183), (884, 24231), (1066, 20094), (1182, 18122), (1326, 16154), (1394, 15366), (1599, 13396), (2091, 10244), (2132, 10047), (2364, 9061), (2561, 8364), (2652, 8077), (2788, 7683), (3198, 6698), (3349, 6396), (4182, 5122)]