400236720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{787}}^1$

素因数の和:979

約数の個数: 160

約数和(自身を含む): 1346080512

約数和(自身を除く): 945843792

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 163, 195, 208, 240, 260, 312, 326, 390, 489, 520, 624, 652, 780, 787, 815, 978, 1040, 1304, 1560, 1574, 1630, 1956, 2119, 2361, 2445, 2608, 3120, 3148, 3260, 3912, 3935, 4238, 4722, 4890, 6296, 6357, 6520, 7824, 7870, 8476, 9444, 9780, 10231, 10595, 11805, 12592, 12714, 13040, 15740, 16952, 18888, 19560, 20462, 21190, 23610, 25428, 30693, 31480, 31785, 33904, 37776, 39120, 40924, 42380, 47220, 50856, 51155, 61386, 62960, 63570, 81848, 84760, 94440, 101712, 102310, 122772, 127140, 128281, 153465, 163696, 169520, 188880, 204620, 245544, 254280, 256562, 306930, 384843, 409240, 491088, 508560, 513124, 613860, 641405, 769686, 818480, 1026248, 1227720, 1282810, 1539372, 1667653, 1924215, 2052496, 2455440, 2565620, 3078744, 3335306, 3848430, 5002959, 5131240, 6157488, 6670612, 7696860, 8338265, 10005918, 10262480, 13341224, 15393720, 16676530, 20011836, 25014795, 26682448, 30787440, 33353060, 40023672, 50029590, 66706120, 80047344, 100059180, 133412240, 200118360, 400236720]

約数ペア:

[(1, 400236720), (2, 200118360), (3, 133412240), (4, 100059180), (5, 80047344), (6, 66706120), (8, 50029590), (10, 40023672), (12, 33353060), (13, 30787440), (15, 26682448), (16, 25014795), (20, 20011836), (24, 16676530), (26, 15393720), (30, 13341224), (39, 10262480), (40, 10005918), (48, 8338265), (52, 7696860), (60, 6670612), (65, 6157488), (78, 5131240), (80, 5002959), (104, 3848430), (120, 3335306), (130, 3078744), (156, 2565620), (163, 2455440), (195, 2052496), (208, 1924215), (240, 1667653), (260, 1539372), (312, 1282810), (326, 1227720), (390, 1026248), (489, 818480), (520, 769686), (624, 641405), (652, 613860), (780, 513124), (787, 508560), (815, 491088), (978, 409240), (1040, 384843), (1304, 306930), (1560, 256562), (1574, 254280), (1630, 245544), (1956, 204620), (2119, 188880), (2361, 169520), (2445, 163696), (2608, 153465), (3120, 128281), (3148, 127140), (3260, 122772), (3912, 102310), (3935, 101712), (4238, 94440), (4722, 84760), (4890, 81848), (6296, 63570), (6357, 62960), (6520, 61386), (7824, 51155), (7870, 50856), (8476, 47220), (9444, 42380), (9780, 40924), (10231, 39120), (10595, 37776), (11805, 33904), (12592, 31785), (12714, 31480), (13040, 30693), (15740, 25428), (16952, 23610), (18888, 21190), (19560, 20462)]