21121695

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:162

約数の個数: 96

約数和(自身を含む): 45527040

約数和(自身を除く): 24405345

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 49, 63, 93, 103, 105, 135, 147, 155, 189, 217, 245, 279, 309, 315, 441, 465, 515, 651, 721, 735, 837, 927, 945, 1085, 1323, 1395, 1519, 1545, 1953, 2163, 2205, 2781, 3193, 3255, 3605, 4185, 4557, 4635, 5047, 5859, 6489, 6615, 7595, 9579, 9765, 10815, 13671, 13905, 15141, 15965, 19467, 22351, 22785, 25235, 28737, 29295, 32445, 41013, 45423, 47895, 67053, 68355, 75705, 86211, 97335, 111755, 136269, 143685, 156457, 201159, 205065, 227115, 335265, 431055, 469371, 603477, 681345, 782285, 1005795, 1408113, 2346855, 3017385, 4224339, 7040565, 21121695]

約数ペア:

[(1, 21121695), (3, 7040565), (5, 4224339), (7, 3017385), (9, 2346855), (15, 1408113), (21, 1005795), (27, 782285), (31, 681345), (35, 603477), (45, 469371), (49, 431055), (63, 335265), (93, 227115), (103, 205065), (105, 201159), (135, 156457), (147, 143685), (155, 136269), (189, 111755), (217, 97335), (245, 86211), (279, 75705), (309, 68355), (315, 67053), (441, 47895), (465, 45423), (515, 41013), (651, 32445), (721, 29295), (735, 28737), (837, 25235), (927, 22785), (945, 22351), (1085, 19467), (1323, 15965), (1395, 15141), (1519, 13905), (1545, 13671), (1953, 10815), (2163, 9765), (2205, 9579), (2781, 7595), (3193, 6615), (3255, 6489), (3605, 5859), (4185, 5047), (4557, 4635)]