21616875

素因数分解:

$3^4\times 5^4\times 7^1\times {\mathrm{61}}^1$

素因数の和:100

約数の個数: 100

約数和(自身を含む): 46872496

約数和(自身を除く): 25255621

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 61, 63, 75, 81, 105, 125, 135, 175, 183, 189, 225, 305, 315, 375, 405, 427, 525, 549, 567, 625, 675, 875, 915, 945, 1125, 1281, 1525, 1575, 1647, 1875, 2025, 2135, 2625, 2745, 2835, 3375, 3843, 4375, 4575, 4725, 4941, 5625, 6405, 7625, 7875, 8235, 10125, 10675, 11529, 13125, 13725, 14175, 16875, 19215, 22875, 23625, 24705, 32025, 34587, 38125, 39375, 41175, 50625, 53375, 57645, 68625, 70875, 96075, 114375, 118125, 123525, 160125, 172935, 205875, 266875, 288225, 343125, 354375, 480375, 617625, 800625, 864675, 1029375, 1441125, 2401875, 3088125, 4323375, 7205625, 21616875]

約数ペア:

[(1, 21616875), (3, 7205625), (5, 4323375), (7, 3088125), (9, 2401875), (15, 1441125), (21, 1029375), (25, 864675), (27, 800625), (35, 617625), (45, 480375), (61, 354375), (63, 343125), (75, 288225), (81, 266875), (105, 205875), (125, 172935), (135, 160125), (175, 123525), (183, 118125), (189, 114375), (225, 96075), (305, 70875), (315, 68625), (375, 57645), (405, 53375), (427, 50625), (525, 41175), (549, 39375), (567, 38125), (625, 34587), (675, 32025), (875, 24705), (915, 23625), (945, 22875), (1125, 19215), (1281, 16875), (1525, 14175), (1575, 13725), (1647, 13125), (1875, 11529), (2025, 10675), (2135, 10125), (2625, 8235), (2745, 7875), (2835, 7625), (3375, 6405), (3843, 5625), (4375, 4941), (4575, 4725)]