205375905

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:241

約数の個数: 120

約数和(自身を含む): 436993920

約数和(自身を除く): 231618015

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 79, 81, 105, 131, 135, 147, 189, 237, 245, 315, 393, 395, 405, 441, 553, 567, 655, 711, 735, 917, 945, 1179, 1185, 1323, 1659, 1965, 2133, 2205, 2751, 2765, 2835, 3537, 3555, 3871, 3969, 4585, 4977, 5895, 6399, 6419, 6615, 8253, 8295, 10349, 10611, 10665, 11613, 13755, 14931, 17685, 19257, 19355, 19845, 24759, 24885, 31047, 31995, 32095, 34839, 41265, 44793, 51745, 53055, 57771, 58065, 72443, 74277, 74655, 93141, 96285, 104517, 123795, 155235, 173313, 174195, 217329, 223965, 279423, 288855, 313551, 362215, 371385, 465705, 507101, 519939, 522585, 651987, 838269, 866565, 1086645, 1397115, 1521303, 1567755, 1955961, 2535505, 2599695, 3259935, 4191345, 4563909, 5867883, 7606515, 9779805, 13691727, 22819545, 29339415, 41075181, 68458635, 205375905]

約数ペア:

[(1, 205375905), (3, 68458635), (5, 41075181), (7, 29339415), (9, 22819545), (15, 13691727), (21, 9779805), (27, 7606515), (35, 5867883), (45, 4563909), (49, 4191345), (63, 3259935), (79, 2599695), (81, 2535505), (105, 1955961), (131, 1567755), (135, 1521303), (147, 1397115), (189, 1086645), (237, 866565), (245, 838269), (315, 651987), (393, 522585), (395, 519939), (405, 507101), (441, 465705), (553, 371385), (567, 362215), (655, 313551), (711, 288855), (735, 279423), (917, 223965), (945, 217329), (1179, 174195), (1185, 173313), (1323, 155235), (1659, 123795), (1965, 104517), (2133, 96285), (2205, 93141), (2751, 74655), (2765, 74277), (2835, 72443), (3537, 58065), (3555, 57771), (3871, 53055), (3969, 51745), (4585, 44793), (4977, 41265), (5895, 34839), (6399, 32095), (6419, 31995), (6615, 31047), (8253, 24885), (8295, 24759), (10349, 19845), (10611, 19355), (10665, 19257), (11613, 17685), (13755, 14931)]