28439320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{601}}^1$

素因数の和:645

約数の個数: 96

約数和(自身を含む): 79319520

約数和(自身を除く): 50880200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 169, 182, 260, 280, 338, 364, 455, 520, 601, 676, 728, 845, 910, 1183, 1202, 1352, 1690, 1820, 2366, 2404, 3005, 3380, 3640, 4207, 4732, 4808, 5915, 6010, 6760, 7813, 8414, 9464, 11830, 12020, 15626, 16828, 21035, 23660, 24040, 31252, 33656, 39065, 42070, 47320, 54691, 62504, 78130, 84140, 101569, 109382, 156260, 168280, 203138, 218764, 273455, 312520, 406276, 437528, 507845, 546910, 710983, 812552, 1015690, 1093820, 1421966, 2031380, 2187640, 2843932, 3554915, 4062760, 5687864, 7109830, 14219660, 28439320]

約数ペア:

[(1, 28439320), (2, 14219660), (4, 7109830), (5, 5687864), (7, 4062760), (8, 3554915), (10, 2843932), (13, 2187640), (14, 2031380), (20, 1421966), (26, 1093820), (28, 1015690), (35, 812552), (40, 710983), (52, 546910), (56, 507845), (65, 437528), (70, 406276), (91, 312520), (104, 273455), (130, 218764), (140, 203138), (169, 168280), (182, 156260), (260, 109382), (280, 101569), (338, 84140), (364, 78130), (455, 62504), (520, 54691), (601, 47320), (676, 42070), (728, 39065), (845, 33656), (910, 31252), (1183, 24040), (1202, 23660), (1352, 21035), (1690, 16828), (1820, 15626), (2366, 12020), (2404, 11830), (3005, 9464), (3380, 8414), (3640, 7813), (4207, 6760), (4732, 6010), (4808, 5915)]