21718125

素因数分解:

$3^5\times 5^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:59

約数の個数: 120

約数和(自身を含む): 47759712

約数和(自身を除く): 26041587

約数列:

[1, 3, 5, 9, 11, 13, 15, 25, 27, 33, 39, 45, 55, 65, 75, 81, 99, 117, 125, 135, 143, 165, 195, 225, 243, 275, 297, 325, 351, 375, 405, 429, 495, 585, 625, 675, 715, 825, 891, 975, 1053, 1125, 1215, 1287, 1375, 1485, 1625, 1755, 1875, 2025, 2145, 2475, 2673, 2925, 3159, 3375, 3575, 3861, 4125, 4455, 4875, 5265, 5625, 6075, 6435, 6875, 7425, 8125, 8775, 10125, 10725, 11583, 12375, 13365, 14625, 15795, 16875, 17875, 19305, 20625, 22275, 24375, 26325, 30375, 32175, 34749, 37125, 43875, 50625, 53625, 57915, 61875, 66825, 73125, 78975, 89375, 96525, 111375, 131625, 151875, 160875, 173745, 185625, 219375, 268125, 289575, 334125, 394875, 482625, 556875, 658125, 804375, 868725, 1447875, 1670625, 1974375, 2413125, 4343625, 7239375, 21718125]

約数ペア:

[(1, 21718125), (3, 7239375), (5, 4343625), (9, 2413125), (11, 1974375), (13, 1670625), (15, 1447875), (25, 868725), (27, 804375), (33, 658125), (39, 556875), (45, 482625), (55, 394875), (65, 334125), (75, 289575), (81, 268125), (99, 219375), (117, 185625), (125, 173745), (135, 160875), (143, 151875), (165, 131625), (195, 111375), (225, 96525), (243, 89375), (275, 78975), (297, 73125), (325, 66825), (351, 61875), (375, 57915), (405, 53625), (429, 50625), (495, 43875), (585, 37125), (625, 34749), (675, 32175), (715, 30375), (825, 26325), (891, 24375), (975, 22275), (1053, 20625), (1125, 19305), (1215, 17875), (1287, 16875), (1375, 15795), (1485, 14625), (1625, 13365), (1755, 12375), (1875, 11583), (2025, 10725), (2145, 10125), (2475, 8775), (2673, 8125), (2925, 7425), (3159, 6875), (3375, 6435), (3575, 6075), (3861, 5625), (4125, 5265), (4455, 4875)]