31242120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2861}}^1$

素因数の和:2895

約数の個数: 128

約数和(自身を含む): 115395840

約数和(自身を除く): 84153720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 2861, 3640, 5460, 5722, 8583, 10920, 11444, 14305, 17166, 20027, 22888, 28610, 34332, 37193, 40054, 42915, 57220, 60081, 68664, 74386, 80108, 85830, 100135, 111579, 114440, 120162, 148772, 160216, 171660, 185965, 200270, 223158, 240324, 260351, 297544, 300405, 343320, 371930, 400540, 446316, 480648, 520702, 557895, 600810, 743860, 781053, 801080, 892632, 1041404, 1115790, 1201620, 1301755, 1487720, 1562106, 2082808, 2231580, 2403240, 2603510, 3124212, 3905265, 4463160, 5207020, 6248424, 7810530, 10414040, 15621060, 31242120]

約数ペア:

[(1, 31242120), (2, 15621060), (3, 10414040), (4, 7810530), (5, 6248424), (6, 5207020), (7, 4463160), (8, 3905265), (10, 3124212), (12, 2603510), (13, 2403240), (14, 2231580), (15, 2082808), (20, 1562106), (21, 1487720), (24, 1301755), (26, 1201620), (28, 1115790), (30, 1041404), (35, 892632), (39, 801080), (40, 781053), (42, 743860), (52, 600810), (56, 557895), (60, 520702), (65, 480648), (70, 446316), (78, 400540), (84, 371930), (91, 343320), (104, 300405), (105, 297544), (120, 260351), (130, 240324), (140, 223158), (156, 200270), (168, 185965), (182, 171660), (195, 160216), (210, 148772), (260, 120162), (273, 114440), (280, 111579), (312, 100135), (364, 85830), (390, 80108), (420, 74386), (455, 68664), (520, 60081), (546, 57220), (728, 42915), (780, 40054), (840, 37193), (910, 34332), (1092, 28610), (1365, 22888), (1560, 20027), (1820, 17166), (2184, 14305), (2730, 11444), (2861, 10920), (3640, 8583), (5460, 5722)]