28689440

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1061}}^1$

素因数の和:1102

約数の個数: 72

約数和(自身を含む): 73462788

約数和(自身を除く): 44773348

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 169, 208, 260, 338, 416, 520, 676, 845, 1040, 1061, 1352, 1690, 2080, 2122, 2704, 3380, 4244, 5305, 5408, 6760, 8488, 10610, 13520, 13793, 16976, 21220, 27040, 27586, 33952, 42440, 55172, 68965, 84880, 110344, 137930, 169760, 179309, 220688, 275860, 358618, 441376, 551720, 717236, 896545, 1103440, 1434472, 1793090, 2206880, 2868944, 3586180, 5737888, 7172360, 14344720, 28689440]

約数ペア:

[(1, 28689440), (2, 14344720), (4, 7172360), (5, 5737888), (8, 3586180), (10, 2868944), (13, 2206880), (16, 1793090), (20, 1434472), (26, 1103440), (32, 896545), (40, 717236), (52, 551720), (65, 441376), (80, 358618), (104, 275860), (130, 220688), (160, 179309), (169, 169760), (208, 137930), (260, 110344), (338, 84880), (416, 68965), (520, 55172), (676, 42440), (845, 33952), (1040, 27586), (1061, 27040), (1352, 21220), (1690, 16976), (2080, 13793), (2122, 13520), (2704, 10610), (3380, 8488), (4244, 6760), (5305, 5408)]