28215760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{977}}^1$

素因数の和:1028

約数の個数: 60

約数和(自身を含む): 69306948

約数和(自身を除く): 41091188

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 722, 760, 977, 1444, 1520, 1805, 1954, 2888, 3610, 3908, 4885, 5776, 7220, 7816, 9770, 14440, 15632, 18563, 19540, 28880, 37126, 39080, 74252, 78160, 92815, 148504, 185630, 297008, 352697, 371260, 705394, 742520, 1410788, 1485040, 1763485, 2821576, 3526970, 5643152, 7053940, 14107880, 28215760]

約数ペア:

[(1, 28215760), (2, 14107880), (4, 7053940), (5, 5643152), (8, 3526970), (10, 2821576), (16, 1763485), (19, 1485040), (20, 1410788), (38, 742520), (40, 705394), (76, 371260), (80, 352697), (95, 297008), (152, 185630), (190, 148504), (304, 92815), (361, 78160), (380, 74252), (722, 39080), (760, 37126), (977, 28880), (1444, 19540), (1520, 18563), (1805, 15632), (1954, 14440), (2888, 9770), (3610, 7816), (3908, 7220), (4885, 5776)]