20435040

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{617}}^1$

素因数の和:661

約数の個数: 144

約数和(自身を含む): 72884448

約数和(自身を除く): 52449408

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 96, 115, 120, 138, 144, 160, 180, 184, 207, 230, 240, 276, 288, 345, 360, 368, 414, 460, 480, 552, 617, 690, 720, 736, 828, 920, 1035, 1104, 1234, 1380, 1440, 1656, 1840, 1851, 2070, 2208, 2468, 2760, 3085, 3312, 3680, 3702, 4140, 4936, 5520, 5553, 6170, 6624, 7404, 8280, 9255, 9872, 11040, 11106, 12340, 14191, 14808, 16560, 18510, 19744, 22212, 24680, 27765, 28382, 29616, 33120, 37020, 42573, 44424, 49360, 55530, 56764, 59232, 70955, 74040, 85146, 88848, 98720, 111060, 113528, 127719, 141910, 148080, 170292, 177696, 212865, 222120, 227056, 255438, 283820, 296160, 340584, 425730, 444240, 454112, 510876, 567640, 638595, 681168, 851460, 888480, 1021752, 1135280, 1277190, 1362336, 1702920, 2043504, 2270560, 2554380, 3405840, 4087008, 5108760, 6811680, 10217520, 20435040]

約数ペア:

[(1, 20435040), (2, 10217520), (3, 6811680), (4, 5108760), (5, 4087008), (6, 3405840), (8, 2554380), (9, 2270560), (10, 2043504), (12, 1702920), (15, 1362336), (16, 1277190), (18, 1135280), (20, 1021752), (23, 888480), (24, 851460), (30, 681168), (32, 638595), (36, 567640), (40, 510876), (45, 454112), (46, 444240), (48, 425730), (60, 340584), (69, 296160), (72, 283820), (80, 255438), (90, 227056), (92, 222120), (96, 212865), (115, 177696), (120, 170292), (138, 148080), (144, 141910), (160, 127719), (180, 113528), (184, 111060), (207, 98720), (230, 88848), (240, 85146), (276, 74040), (288, 70955), (345, 59232), (360, 56764), (368, 55530), (414, 49360), (460, 44424), (480, 42573), (552, 37020), (617, 33120), (690, 29616), (720, 28382), (736, 27765), (828, 24680), (920, 22212), (1035, 19744), (1104, 18510), (1234, 16560), (1380, 14808), (1440, 14191), (1656, 12340), (1840, 11106), (1851, 11040), (2070, 9872), (2208, 9255), (2468, 8280), (2760, 7404), (3085, 6624), (3312, 6170), (3680, 5553), (3702, 5520), (4140, 4936)]