28282020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{359}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 86365440

約数和(自身を除く): 58083420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 101, 130, 156, 195, 202, 260, 303, 359, 390, 404, 505, 606, 718, 780, 1010, 1077, 1212, 1313, 1436, 1515, 1795, 2020, 2154, 2626, 3030, 3590, 3939, 4308, 4667, 5252, 5385, 6060, 6565, 7180, 7878, 9334, 10770, 13130, 14001, 15756, 18668, 19695, 21540, 23335, 26260, 28002, 36259, 39390, 46670, 56004, 70005, 72518, 78780, 93340, 108777, 140010, 145036, 181295, 217554, 280020, 362590, 435108, 471367, 543885, 725180, 942734, 1087770, 1414101, 1885468, 2175540, 2356835, 2828202, 4713670, 5656404, 7070505, 9427340, 14141010, 28282020]

約数ペア:

[(1, 28282020), (2, 14141010), (3, 9427340), (4, 7070505), (5, 5656404), (6, 4713670), (10, 2828202), (12, 2356835), (13, 2175540), (15, 1885468), (20, 1414101), (26, 1087770), (30, 942734), (39, 725180), (52, 543885), (60, 471367), (65, 435108), (78, 362590), (101, 280020), (130, 217554), (156, 181295), (195, 145036), (202, 140010), (260, 108777), (303, 93340), (359, 78780), (390, 72518), (404, 70005), (505, 56004), (606, 46670), (718, 39390), (780, 36259), (1010, 28002), (1077, 26260), (1212, 23335), (1313, 21540), (1436, 19695), (1515, 18668), (1795, 15756), (2020, 14001), (2154, 13130), (2626, 10770), (3030, 9334), (3590, 7878), (3939, 7180), (4308, 6565), (4667, 6060), (5252, 5385)]