18728325

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:104

約数の個数: 144

約数和(自身を含む): 44568576

約数和(自身を除く): 25840251

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 23, 25, 33, 35, 45, 47, 55, 63, 69, 75, 77, 99, 105, 115, 141, 161, 165, 175, 207, 225, 231, 235, 253, 275, 315, 329, 345, 385, 423, 483, 495, 517, 525, 575, 693, 705, 759, 805, 825, 987, 1035, 1081, 1155, 1175, 1265, 1449, 1551, 1575, 1645, 1725, 1771, 1925, 2115, 2277, 2415, 2475, 2585, 2961, 3243, 3465, 3525, 3619, 3795, 4025, 4653, 4935, 5175, 5313, 5405, 5775, 6325, 7245, 7567, 7755, 8225, 8855, 9729, 10575, 10857, 11385, 11891, 12075, 12925, 14805, 15939, 16215, 17325, 18095, 18975, 22701, 23265, 24675, 26565, 27025, 32571, 35673, 36225, 37835, 38775, 44275, 48645, 54285, 56925, 59455, 68103, 74025, 79695, 81075, 83237, 90475, 107019, 113505, 116325, 132825, 162855, 178365, 189175, 243225, 249711, 271425, 297275, 340515, 398475, 416185, 535095, 567525, 749133, 814275, 891825, 1248555, 1702575, 2080925, 2675475, 3745665, 6242775, 18728325]

約数ペア:

[(1, 18728325), (3, 6242775), (5, 3745665), (7, 2675475), (9, 2080925), (11, 1702575), (15, 1248555), (21, 891825), (23, 814275), (25, 749133), (33, 567525), (35, 535095), (45, 416185), (47, 398475), (55, 340515), (63, 297275), (69, 271425), (75, 249711), (77, 243225), (99, 189175), (105, 178365), (115, 162855), (141, 132825), (161, 116325), (165, 113505), (175, 107019), (207, 90475), (225, 83237), (231, 81075), (235, 79695), (253, 74025), (275, 68103), (315, 59455), (329, 56925), (345, 54285), (385, 48645), (423, 44275), (483, 38775), (495, 37835), (517, 36225), (525, 35673), (575, 32571), (693, 27025), (705, 26565), (759, 24675), (805, 23265), (825, 22701), (987, 18975), (1035, 18095), (1081, 17325), (1155, 16215), (1175, 15939), (1265, 14805), (1449, 12925), (1551, 12075), (1575, 11891), (1645, 11385), (1725, 10857), (1771, 10575), (1925, 9729), (2115, 8855), (2277, 8225), (2415, 7755), (2475, 7567), (2585, 7245), (2961, 6325), (3243, 5775), (3465, 5405), (3525, 5313), (3619, 5175), (3795, 4935), (4025, 4653)]