21031888620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{15859}}^1$

素因数の和:15956

約数の個数: 144

約数和(自身を含む): 63499887360

約数和(自身を除く): 42467998740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 31, 46, 60, 62, 69, 92, 93, 115, 124, 138, 155, 186, 230, 276, 310, 345, 372, 460, 465, 620, 690, 713, 930, 961, 1380, 1426, 1860, 1922, 2139, 2852, 2883, 3565, 3844, 4278, 4805, 5766, 7130, 8556, 9610, 10695, 11532, 14260, 14415, 15859, 19220, 21390, 22103, 28830, 31718, 42780, 44206, 47577, 57660, 63436, 66309, 79295, 88412, 95154, 110515, 132618, 158590, 190308, 221030, 237885, 265236, 317180, 331545, 364757, 442060, 475770, 491629, 663090, 729514, 951540, 983258, 1094271, 1326180, 1459028, 1474887, 1823785, 1966516, 2188542, 2458145, 2949774, 3647570, 4377084, 4916290, 5471355, 5899548, 7295140, 7374435, 9832580, 10942710, 11307467, 14748870, 15240499, 21885420, 22614934, 29497740, 30480998, 33922401, 45229868, 45721497, 56537335, 60961996, 67844802, 76202495, 91442994, 113074670, 135689604, 152404990, 169612005, 182885988, 226149340, 228607485, 304809980, 339224010, 350531477, 457214970, 678448020, 701062954, 914429940, 1051594431, 1402125908, 1752657385, 2103188862, 3505314770, 4206377724, 5257972155, 7010629540, 10515944310, 21031888620]

約数ペア:

[(1, 21031888620), (2, 10515944310), (3, 7010629540), (4, 5257972155), (5, 4206377724), (6, 3505314770), (10, 2103188862), (12, 1752657385), (15, 1402125908), (20, 1051594431), (23, 914429940), (30, 701062954), (31, 678448020), (46, 457214970), (60, 350531477), (62, 339224010), (69, 304809980), (92, 228607485), (93, 226149340), (115, 182885988), (124, 169612005), (138, 152404990), (155, 135689604), (186, 113074670), (230, 91442994), (276, 76202495), (310, 67844802), (345, 60961996), (372, 56537335), (460, 45721497), (465, 45229868), (620, 33922401), (690, 30480998), (713, 29497740), (930, 22614934), (961, 21885420), (1380, 15240499), (1426, 14748870), (1860, 11307467), (1922, 10942710), (2139, 9832580), (2852, 7374435), (2883, 7295140), (3565, 5899548), (3844, 5471355), (4278, 4916290), (4805, 4377084), (5766, 3647570), (7130, 2949774), (8556, 2458145), (9610, 2188542), (10695, 1966516), (11532, 1823785), (14260, 1474887), (14415, 1459028), (15859, 1326180), (19220, 1094271), (21390, 983258), (22103, 951540), (28830, 729514), (31718, 663090), (42780, 491629), (44206, 475770), (47577, 442060), (57660, 364757), (63436, 331545), (66309, 317180), (79295, 265236), (88412, 237885), (95154, 221030), (110515, 190308), (132618, 158590)]