638521728

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{3457}}^1$

素因数の和:3524

約数の個数: 128

約数和(自身を含む): 1876449120

約数和(自身を除く): 1237927392

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 37, 39, 48, 52, 64, 74, 78, 96, 104, 111, 128, 148, 156, 192, 208, 222, 296, 312, 384, 416, 444, 481, 592, 624, 832, 888, 962, 1184, 1248, 1443, 1664, 1776, 1924, 2368, 2496, 2886, 3457, 3552, 3848, 4736, 4992, 5772, 6914, 7104, 7696, 10371, 11544, 13828, 14208, 15392, 20742, 23088, 27656, 30784, 41484, 44941, 46176, 55312, 61568, 82968, 89882, 92352, 110624, 127909, 134823, 165936, 179764, 184704, 221248, 255818, 269646, 331872, 359528, 383727, 442496, 511636, 539292, 663744, 719056, 767454, 1023272, 1078584, 1327488, 1438112, 1534908, 1662817, 2046544, 2157168, 2876224, 3069816, 3325634, 4093088, 4314336, 4988451, 5752448, 6139632, 6651268, 8186176, 8628672, 9976902, 12279264, 13302536, 16372352, 17257344, 19953804, 24558528, 26605072, 39907608, 49117056, 53210144, 79815216, 106420288, 159630432, 212840576, 319260864, 638521728]

約数ペア:

[(1, 638521728), (2, 319260864), (3, 212840576), (4, 159630432), (6, 106420288), (8, 79815216), (12, 53210144), (13, 49117056), (16, 39907608), (24, 26605072), (26, 24558528), (32, 19953804), (37, 17257344), (39, 16372352), (48, 13302536), (52, 12279264), (64, 9976902), (74, 8628672), (78, 8186176), (96, 6651268), (104, 6139632), (111, 5752448), (128, 4988451), (148, 4314336), (156, 4093088), (192, 3325634), (208, 3069816), (222, 2876224), (296, 2157168), (312, 2046544), (384, 1662817), (416, 1534908), (444, 1438112), (481, 1327488), (592, 1078584), (624, 1023272), (832, 767454), (888, 719056), (962, 663744), (1184, 539292), (1248, 511636), (1443, 442496), (1664, 383727), (1776, 359528), (1924, 331872), (2368, 269646), (2496, 255818), (2886, 221248), (3457, 184704), (3552, 179764), (3848, 165936), (4736, 134823), (4992, 127909), (5772, 110624), (6914, 92352), (7104, 89882), (7696, 82968), (10371, 61568), (11544, 55312), (13828, 46176), (14208, 44941), (15392, 41484), (20742, 30784), (23088, 27656)]