28114520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:169

約数の個数: 128

約数和(自身を含む): 77414400

約数和(自身を除く): 49299880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 41, 56, 62, 70, 79, 82, 124, 140, 155, 158, 164, 205, 217, 248, 280, 287, 310, 316, 328, 395, 410, 434, 553, 574, 620, 632, 790, 820, 868, 1085, 1106, 1148, 1240, 1271, 1435, 1580, 1640, 1736, 2170, 2212, 2296, 2449, 2542, 2765, 2870, 3160, 3239, 4340, 4424, 4898, 5084, 5530, 5740, 6355, 6478, 8680, 8897, 9796, 10168, 11060, 11480, 12245, 12710, 12956, 16195, 17143, 17794, 19592, 22120, 22673, 24490, 25420, 25912, 32390, 34286, 35588, 44485, 45346, 48980, 50840, 64780, 68572, 71176, 85715, 88970, 90692, 97960, 100409, 113365, 129560, 137144, 171430, 177940, 181384, 200818, 226730, 342860, 355880, 401636, 453460, 502045, 685720, 702863, 803272, 906920, 1004090, 1405726, 2008180, 2811452, 3514315, 4016360, 5622904, 7028630, 14057260, 28114520]

約数ペア:

[(1, 28114520), (2, 14057260), (4, 7028630), (5, 5622904), (7, 4016360), (8, 3514315), (10, 2811452), (14, 2008180), (20, 1405726), (28, 1004090), (31, 906920), (35, 803272), (40, 702863), (41, 685720), (56, 502045), (62, 453460), (70, 401636), (79, 355880), (82, 342860), (124, 226730), (140, 200818), (155, 181384), (158, 177940), (164, 171430), (205, 137144), (217, 129560), (248, 113365), (280, 100409), (287, 97960), (310, 90692), (316, 88970), (328, 85715), (395, 71176), (410, 68572), (434, 64780), (553, 50840), (574, 48980), (620, 45346), (632, 44485), (790, 35588), (820, 34286), (868, 32390), (1085, 25912), (1106, 25420), (1148, 24490), (1240, 22673), (1271, 22120), (1435, 19592), (1580, 17794), (1640, 17143), (1736, 16195), (2170, 12956), (2212, 12710), (2296, 12245), (2449, 11480), (2542, 11060), (2765, 10168), (2870, 9796), (3160, 8897), (3239, 8680), (4340, 6478), (4424, 6355), (4898, 5740), (5084, 5530)]