19800165

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 42024960

約数和(自身を除く): 22224795

約数列:

[1, 3, 5, 7, 11, 15, 21, 31, 33, 35, 49, 55, 77, 79, 93, 105, 147, 155, 165, 217, 231, 237, 245, 341, 385, 395, 465, 539, 553, 651, 735, 869, 1023, 1085, 1155, 1185, 1519, 1617, 1659, 1705, 2387, 2449, 2607, 2695, 2765, 3255, 3871, 4345, 4557, 5115, 6083, 7161, 7347, 7595, 8085, 8295, 11613, 11935, 12245, 13035, 16709, 17143, 18249, 19355, 22785, 26939, 30415, 35805, 36735, 42581, 50127, 51429, 58065, 80817, 83545, 85715, 91245, 120001, 127743, 134695, 188573, 212905, 250635, 257145, 360003, 404085, 565719, 600005, 638715, 942865, 1320011, 1800015, 2828595, 3960033, 6600055, 19800165]

約数ペア:

[(1, 19800165), (3, 6600055), (5, 3960033), (7, 2828595), (11, 1800015), (15, 1320011), (21, 942865), (31, 638715), (33, 600005), (35, 565719), (49, 404085), (55, 360003), (77, 257145), (79, 250635), (93, 212905), (105, 188573), (147, 134695), (155, 127743), (165, 120001), (217, 91245), (231, 85715), (237, 83545), (245, 80817), (341, 58065), (385, 51429), (395, 50127), (465, 42581), (539, 36735), (553, 35805), (651, 30415), (735, 26939), (869, 22785), (1023, 19355), (1085, 18249), (1155, 17143), (1185, 16709), (1519, 13035), (1617, 12245), (1659, 11935), (1705, 11613), (2387, 8295), (2449, 8085), (2607, 7595), (2695, 7347), (2765, 7161), (3255, 6083), (3871, 5115), (4345, 4557)]