261401520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{811}}^1$

素因数の和:923

約数の個数: 160

約数和(自身を含む): 869944320

約数和(自身を除く): 608542800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 79, 80, 85, 102, 120, 136, 158, 170, 204, 237, 240, 255, 272, 316, 340, 395, 408, 474, 510, 632, 680, 790, 811, 816, 948, 1020, 1185, 1264, 1343, 1360, 1580, 1622, 1896, 2040, 2370, 2433, 2686, 3160, 3244, 3792, 4029, 4055, 4080, 4740, 4866, 5372, 6320, 6488, 6715, 8058, 8110, 9480, 9732, 10744, 12165, 12976, 13430, 13787, 16116, 16220, 18960, 19464, 20145, 21488, 24330, 26860, 27574, 32232, 32440, 38928, 40290, 41361, 48660, 53720, 55148, 64069, 64464, 64880, 68935, 80580, 82722, 97320, 107440, 110296, 128138, 137870, 161160, 165444, 192207, 194640, 206805, 220592, 256276, 275740, 320345, 322320, 330888, 384414, 413610, 512552, 551480, 640690, 661776, 768828, 827220, 961035, 1025104, 1089173, 1102960, 1281380, 1537656, 1654440, 1922070, 2178346, 2562760, 3075312, 3267519, 3308880, 3844140, 4356692, 5125520, 5445865, 6535038, 7688280, 8713384, 10891730, 13070076, 15376560, 16337595, 17426768, 21783460, 26140152, 32675190, 43566920, 52280304, 65350380, 87133840, 130700760, 261401520]

約数ペア:

[(1, 261401520), (2, 130700760), (3, 87133840), (4, 65350380), (5, 52280304), (6, 43566920), (8, 32675190), (10, 26140152), (12, 21783460), (15, 17426768), (16, 16337595), (17, 15376560), (20, 13070076), (24, 10891730), (30, 8713384), (34, 7688280), (40, 6535038), (48, 5445865), (51, 5125520), (60, 4356692), (68, 3844140), (79, 3308880), (80, 3267519), (85, 3075312), (102, 2562760), (120, 2178346), (136, 1922070), (158, 1654440), (170, 1537656), (204, 1281380), (237, 1102960), (240, 1089173), (255, 1025104), (272, 961035), (316, 827220), (340, 768828), (395, 661776), (408, 640690), (474, 551480), (510, 512552), (632, 413610), (680, 384414), (790, 330888), (811, 322320), (816, 320345), (948, 275740), (1020, 256276), (1185, 220592), (1264, 206805), (1343, 194640), (1360, 192207), (1580, 165444), (1622, 161160), (1896, 137870), (2040, 128138), (2370, 110296), (2433, 107440), (2686, 97320), (3160, 82722), (3244, 80580), (3792, 68935), (4029, 64880), (4055, 64464), (4080, 64069), (4740, 55148), (4866, 53720), (5372, 48660), (6320, 41361), (6488, 40290), (6715, 38928), (8058, 32440), (8110, 32232), (9480, 27574), (9732, 26860), (10744, 24330), (12165, 21488), (12976, 20145), (13430, 19464), (13787, 18960), (16116, 16220)]