21004236

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 62899200

約数和(自身を除く): 41894964

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 29, 31, 33, 36, 44, 58, 59, 62, 66, 87, 93, 99, 116, 118, 124, 132, 174, 177, 186, 198, 236, 261, 279, 319, 341, 348, 354, 372, 396, 522, 531, 558, 638, 649, 682, 708, 899, 957, 1023, 1044, 1062, 1116, 1276, 1298, 1364, 1711, 1798, 1829, 1914, 1947, 2046, 2124, 2596, 2697, 2871, 3069, 3422, 3596, 3658, 3828, 3894, 4092, 5133, 5394, 5487, 5742, 5841, 6138, 6844, 7316, 7788, 8091, 9889, 10266, 10788, 10974, 11484, 11682, 12276, 15399, 16182, 16461, 18821, 19778, 20119, 20532, 21948, 23364, 29667, 30798, 32364, 32922, 37642, 39556, 40238, 53041, 56463, 59334, 60357, 61596, 65844, 75284, 80476, 89001, 106082, 112926, 118668, 120714, 159123, 169389, 178002, 181071, 212164, 225852, 241428, 318246, 338778, 356004, 362142, 477369, 583451, 636492, 677556, 724284, 954738, 1166902, 1750353, 1909476, 2333804, 3500706, 5251059, 7001412, 10502118, 21004236]

約数ペア:

[(1, 21004236), (2, 10502118), (3, 7001412), (4, 5251059), (6, 3500706), (9, 2333804), (11, 1909476), (12, 1750353), (18, 1166902), (22, 954738), (29, 724284), (31, 677556), (33, 636492), (36, 583451), (44, 477369), (58, 362142), (59, 356004), (62, 338778), (66, 318246), (87, 241428), (93, 225852), (99, 212164), (116, 181071), (118, 178002), (124, 169389), (132, 159123), (174, 120714), (177, 118668), (186, 112926), (198, 106082), (236, 89001), (261, 80476), (279, 75284), (319, 65844), (341, 61596), (348, 60357), (354, 59334), (372, 56463), (396, 53041), (522, 40238), (531, 39556), (558, 37642), (638, 32922), (649, 32364), (682, 30798), (708, 29667), (899, 23364), (957, 21948), (1023, 20532), (1044, 20119), (1062, 19778), (1116, 18821), (1276, 16461), (1298, 16182), (1364, 15399), (1711, 12276), (1798, 11682), (1829, 11484), (1914, 10974), (1947, 10788), (2046, 10266), (2124, 9889), (2596, 8091), (2697, 7788), (2871, 7316), (3069, 6844), (3422, 6138), (3596, 5841), (3658, 5742), (3828, 5487), (3894, 5394), (4092, 5133)]