28875440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:211

約数の個数: 120

約数和(自身を含む): 78172080

約数和(自身を除く): 49296640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 121, 152, 157, 176, 190, 209, 220, 242, 304, 314, 380, 418, 440, 484, 605, 628, 760, 785, 836, 880, 968, 1045, 1210, 1256, 1520, 1570, 1672, 1727, 1936, 2090, 2299, 2420, 2512, 2983, 3140, 3344, 3454, 4180, 4598, 4840, 5966, 6280, 6908, 8360, 8635, 9196, 9680, 11495, 11932, 12560, 13816, 14915, 16720, 17270, 18392, 18997, 22990, 23864, 27632, 29830, 32813, 34540, 36784, 37994, 45980, 47728, 59660, 65626, 69080, 75988, 91960, 94985, 119320, 131252, 138160, 151976, 164065, 183920, 189970, 238640, 262504, 303952, 328130, 360943, 379940, 525008, 656260, 721886, 759880, 1312520, 1443772, 1519760, 1804715, 2625040, 2887544, 3609430, 5775088, 7218860, 14437720, 28875440]

約数ペア:

[(1, 28875440), (2, 14437720), (4, 7218860), (5, 5775088), (8, 3609430), (10, 2887544), (11, 2625040), (16, 1804715), (19, 1519760), (20, 1443772), (22, 1312520), (38, 759880), (40, 721886), (44, 656260), (55, 525008), (76, 379940), (80, 360943), (88, 328130), (95, 303952), (110, 262504), (121, 238640), (152, 189970), (157, 183920), (176, 164065), (190, 151976), (209, 138160), (220, 131252), (242, 119320), (304, 94985), (314, 91960), (380, 75988), (418, 69080), (440, 65626), (484, 59660), (605, 47728), (628, 45980), (760, 37994), (785, 36784), (836, 34540), (880, 32813), (968, 29830), (1045, 27632), (1210, 23864), (1256, 22990), (1520, 18997), (1570, 18392), (1672, 17270), (1727, 16720), (1936, 14915), (2090, 13816), (2299, 12560), (2420, 11932), (2512, 11495), (2983, 9680), (3140, 9196), (3344, 8635), (3454, 8360), (4180, 6908), (4598, 6280), (4840, 5966)]