399840

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1$

素因数の和:49

約数の個数: 144

約数和(自身を含む): 1551312

約数和(自身を除く): 1151472

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 32, 34, 35, 40, 42, 48, 49, 51, 56, 60, 68, 70, 80, 84, 85, 96, 98, 102, 105, 112, 119, 120, 136, 140, 147, 160, 168, 170, 196, 204, 210, 224, 238, 240, 245, 255, 272, 280, 294, 336, 340, 357, 392, 408, 420, 476, 480, 490, 510, 544, 560, 588, 595, 672, 680, 714, 735, 784, 816, 833, 840, 952, 980, 1020, 1120, 1176, 1190, 1360, 1428, 1470, 1568, 1632, 1666, 1680, 1785, 1904, 1960, 2040, 2352, 2380, 2499, 2720, 2856, 2940, 3332, 3360, 3570, 3808, 3920, 4080, 4165, 4704, 4760, 4998, 5712, 5880, 6664, 7140, 7840, 8160, 8330, 9520, 9996, 11424, 11760, 12495, 13328, 14280, 16660, 19040, 19992, 23520, 24990, 26656, 28560, 33320, 39984, 49980, 57120, 66640, 79968, 99960, 133280, 199920, 399840]

約数ペア:

[(1, 399840), (2, 199920), (3, 133280), (4, 99960), (5, 79968), (6, 66640), (7, 57120), (8, 49980), (10, 39984), (12, 33320), (14, 28560), (15, 26656), (16, 24990), (17, 23520), (20, 19992), (21, 19040), (24, 16660), (28, 14280), (30, 13328), (32, 12495), (34, 11760), (35, 11424), (40, 9996), (42, 9520), (48, 8330), (49, 8160), (51, 7840), (56, 7140), (60, 6664), (68, 5880), (70, 5712), (80, 4998), (84, 4760), (85, 4704), (96, 4165), (98, 4080), (102, 3920), (105, 3808), (112, 3570), (119, 3360), (120, 3332), (136, 2940), (140, 2856), (147, 2720), (160, 2499), (168, 2380), (170, 2352), (196, 2040), (204, 1960), (210, 1904), (224, 1785), (238, 1680), (240, 1666), (245, 1632), (255, 1568), (272, 1470), (280, 1428), (294, 1360), (336, 1190), (340, 1176), (357, 1120), (392, 1020), (408, 980), (420, 952), (476, 840), (480, 833), (490, 816), (510, 784), (544, 735), (560, 714), (588, 680), (595, 672)]