989985320

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:427

約数の個数: 128

約数和(自身を含む): 2416435200

約数和(自身を除く): 1426449880

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 46, 74, 92, 115, 127, 148, 184, 185, 229, 230, 254, 296, 370, 458, 460, 508, 635, 740, 851, 916, 920, 1016, 1145, 1270, 1480, 1702, 1832, 2290, 2540, 2921, 3404, 4255, 4580, 4699, 5080, 5267, 5842, 6808, 8473, 8510, 9160, 9398, 10534, 11684, 14605, 16946, 17020, 18796, 21068, 23368, 23495, 26335, 29083, 29210, 33892, 34040, 37592, 42136, 42365, 46990, 52670, 58166, 58420, 67784, 84730, 93980, 105340, 108077, 116332, 116840, 145415, 169460, 187960, 194879, 210680, 216154, 232664, 290830, 338920, 389758, 432308, 540385, 581660, 668909, 779516, 864616, 974395, 1076071, 1080770, 1163320, 1337818, 1559032, 1948790, 2152142, 2161540, 2675636, 3344545, 3897580, 4304284, 4323080, 5351272, 5380355, 6689090, 7795160, 8608568, 10760710, 13378180, 21521420, 24749633, 26756360, 43042840, 49499266, 98998532, 123748165, 197997064, 247496330, 494992660, 989985320]

約数ペア:

[(1, 989985320), (2, 494992660), (4, 247496330), (5, 197997064), (8, 123748165), (10, 98998532), (20, 49499266), (23, 43042840), (37, 26756360), (40, 24749633), (46, 21521420), (74, 13378180), (92, 10760710), (115, 8608568), (127, 7795160), (148, 6689090), (184, 5380355), (185, 5351272), (229, 4323080), (230, 4304284), (254, 3897580), (296, 3344545), (370, 2675636), (458, 2161540), (460, 2152142), (508, 1948790), (635, 1559032), (740, 1337818), (851, 1163320), (916, 1080770), (920, 1076071), (1016, 974395), (1145, 864616), (1270, 779516), (1480, 668909), (1702, 581660), (1832, 540385), (2290, 432308), (2540, 389758), (2921, 338920), (3404, 290830), (4255, 232664), (4580, 216154), (4699, 210680), (5080, 194879), (5267, 187960), (5842, 169460), (6808, 145415), (8473, 116840), (8510, 116332), (9160, 108077), (9398, 105340), (10534, 93980), (11684, 84730), (14605, 67784), (16946, 58420), (17020, 58166), (18796, 52670), (21068, 46990), (23368, 42365), (23495, 42136), (26335, 37592), (29083, 34040), (29210, 33892)]