28902780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{761}}^1$

素因数の和:987

約数の個数: 72

約数和(自身を含む): 88203024

約数和(自身を除く): 59300244

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 211, 422, 633, 761, 844, 1055, 1266, 1522, 1899, 2110, 2283, 2532, 3044, 3165, 3798, 3805, 4220, 4566, 6330, 6849, 7596, 7610, 9132, 9495, 11415, 12660, 13698, 15220, 18990, 22830, 27396, 34245, 37980, 45660, 68490, 136980, 160571, 321142, 481713, 642284, 802855, 963426, 1445139, 1605710, 1926852, 2408565, 2890278, 3211420, 4817130, 5780556, 7225695, 9634260, 14451390, 28902780]

約数ペア:

[(1, 28902780), (2, 14451390), (3, 9634260), (4, 7225695), (5, 5780556), (6, 4817130), (9, 3211420), (10, 2890278), (12, 2408565), (15, 1926852), (18, 1605710), (20, 1445139), (30, 963426), (36, 802855), (45, 642284), (60, 481713), (90, 321142), (180, 160571), (211, 136980), (422, 68490), (633, 45660), (761, 37980), (844, 34245), (1055, 27396), (1266, 22830), (1522, 18990), (1899, 15220), (2110, 13698), (2283, 12660), (2532, 11415), (3044, 9495), (3165, 9132), (3798, 7610), (3805, 7596), (4220, 6849), (4566, 6330)]