20502405

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 45497088

約数和(自身を除く): 24994683

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 61, 63, 77, 97, 99, 105, 165, 183, 231, 291, 305, 315, 385, 427, 485, 495, 549, 671, 679, 693, 873, 915, 1067, 1155, 1281, 1455, 2013, 2037, 2135, 2745, 3201, 3355, 3395, 3465, 3843, 4365, 4697, 5335, 5917, 6039, 6111, 6405, 7469, 9603, 10065, 10185, 14091, 16005, 17751, 19215, 22407, 23485, 29585, 30195, 30555, 37345, 41419, 42273, 48015, 53253, 65087, 67221, 70455, 88755, 112035, 124257, 195261, 207095, 211365, 266265, 325435, 336105, 372771, 455609, 585783, 621285, 976305, 1366827, 1863855, 2278045, 2928915, 4100481, 6834135, 20502405]

約数ペア:

[(1, 20502405), (3, 6834135), (5, 4100481), (7, 2928915), (9, 2278045), (11, 1863855), (15, 1366827), (21, 976305), (33, 621285), (35, 585783), (45, 455609), (55, 372771), (61, 336105), (63, 325435), (77, 266265), (97, 211365), (99, 207095), (105, 195261), (165, 124257), (183, 112035), (231, 88755), (291, 70455), (305, 67221), (315, 65087), (385, 53253), (427, 48015), (485, 42273), (495, 41419), (549, 37345), (671, 30555), (679, 30195), (693, 29585), (873, 23485), (915, 22407), (1067, 19215), (1155, 17751), (1281, 16005), (1455, 14091), (2013, 10185), (2037, 10065), (2135, 9603), (2745, 7469), (3201, 6405), (3355, 6111), (3395, 6039), (3465, 5917), (3843, 5335), (4365, 4697)]