28427840

素因数分解:

$2^6\times 5^1\times 7^4\times {\mathrm{37}}^1$

素因数の和:82

約数の個数: 140

約数和(自身を含む): 81105756

約数和(自身を除く): 52677916

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 64, 70, 74, 80, 98, 112, 140, 148, 160, 185, 196, 224, 245, 259, 280, 296, 320, 343, 370, 392, 448, 490, 518, 560, 592, 686, 740, 784, 980, 1036, 1120, 1184, 1295, 1372, 1480, 1568, 1715, 1813, 1960, 2072, 2240, 2368, 2401, 2590, 2744, 2960, 3136, 3430, 3626, 3920, 4144, 4802, 5180, 5488, 5920, 6860, 7252, 7840, 8288, 9065, 9604, 10360, 10976, 11840, 12005, 12691, 13720, 14504, 15680, 16576, 18130, 19208, 20720, 21952, 24010, 25382, 27440, 29008, 36260, 38416, 41440, 48020, 50764, 54880, 58016, 63455, 72520, 76832, 82880, 88837, 96040, 101528, 109760, 116032, 126910, 145040, 153664, 177674, 192080, 203056, 253820, 290080, 355348, 384160, 406112, 444185, 507640, 580160, 710696, 768320, 812224, 888370, 1015280, 1421392, 1776740, 2030560, 2842784, 3553480, 4061120, 5685568, 7106960, 14213920, 28427840]

約数ペア:

[(1, 28427840), (2, 14213920), (4, 7106960), (5, 5685568), (7, 4061120), (8, 3553480), (10, 2842784), (14, 2030560), (16, 1776740), (20, 1421392), (28, 1015280), (32, 888370), (35, 812224), (37, 768320), (40, 710696), (49, 580160), (56, 507640), (64, 444185), (70, 406112), (74, 384160), (80, 355348), (98, 290080), (112, 253820), (140, 203056), (148, 192080), (160, 177674), (185, 153664), (196, 145040), (224, 126910), (245, 116032), (259, 109760), (280, 101528), (296, 96040), (320, 88837), (343, 82880), (370, 76832), (392, 72520), (448, 63455), (490, 58016), (518, 54880), (560, 50764), (592, 48020), (686, 41440), (740, 38416), (784, 36260), (980, 29008), (1036, 27440), (1120, 25382), (1184, 24010), (1295, 21952), (1372, 20720), (1480, 19208), (1568, 18130), (1715, 16576), (1813, 15680), (1960, 14504), (2072, 13720), (2240, 12691), (2368, 12005), (2401, 11840), (2590, 10976), (2744, 10360), (2960, 9604), (3136, 9065), (3430, 8288), (3626, 7840), (3920, 7252), (4144, 6860), (4802, 5920), (5180, 5488)]