81861840

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{4211}}^1$

素因数の和:4239

約数の個数: 120

約数和(自身を含む): 285169248

約数和(自身を除く): 203307408

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 405, 432, 486, 540, 648, 720, 810, 972, 1080, 1215, 1296, 1620, 1944, 2160, 2430, 3240, 3888, 4211, 4860, 6480, 8422, 9720, 12633, 16844, 19440, 21055, 25266, 33688, 37899, 42110, 50532, 63165, 67376, 75798, 84220, 101064, 113697, 126330, 151596, 168440, 189495, 202128, 227394, 252660, 303192, 336880, 341091, 378990, 454788, 505320, 568485, 606384, 682182, 757980, 909576, 1010640, 1023273, 1136970, 1364364, 1515960, 1705455, 1819152, 2046546, 2273940, 2728728, 3031920, 3410910, 4093092, 4547880, 5116365, 5457456, 6821820, 8186184, 9095760, 10232730, 13643640, 16372368, 20465460, 27287280, 40930920, 81861840]

約数ペア:

[(1, 81861840), (2, 40930920), (3, 27287280), (4, 20465460), (5, 16372368), (6, 13643640), (8, 10232730), (9, 9095760), (10, 8186184), (12, 6821820), (15, 5457456), (16, 5116365), (18, 4547880), (20, 4093092), (24, 3410910), (27, 3031920), (30, 2728728), (36, 2273940), (40, 2046546), (45, 1819152), (48, 1705455), (54, 1515960), (60, 1364364), (72, 1136970), (80, 1023273), (81, 1010640), (90, 909576), (108, 757980), (120, 682182), (135, 606384), (144, 568485), (162, 505320), (180, 454788), (216, 378990), (240, 341091), (243, 336880), (270, 303192), (324, 252660), (360, 227394), (405, 202128), (432, 189495), (486, 168440), (540, 151596), (648, 126330), (720, 113697), (810, 101064), (972, 84220), (1080, 75798), (1215, 67376), (1296, 63165), (1620, 50532), (1944, 42110), (2160, 37899), (2430, 33688), (3240, 25266), (3888, 21055), (4211, 19440), (4860, 16844), (6480, 12633), (8422, 9720)]