28903940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5851}}^1$

素因数の和:5892

約数の個数: 48

約数和(自身を含む): 68819520

約数和(自身を除く): 39915580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 5851, 11702, 23404, 29255, 58510, 76063, 111169, 117020, 152126, 222338, 304252, 380315, 444676, 555845, 760630, 1111690, 1445197, 1521260, 2223380, 2890394, 5780788, 7225985, 14451970, 28903940]

約数ペア:

[(1, 28903940), (2, 14451970), (4, 7225985), (5, 5780788), (10, 2890394), (13, 2223380), (19, 1521260), (20, 1445197), (26, 1111690), (38, 760630), (52, 555845), (65, 444676), (76, 380315), (95, 304252), (130, 222338), (190, 152126), (247, 117020), (260, 111169), (380, 76063), (494, 58510), (988, 29255), (1235, 23404), (2470, 11702), (4940, 5851)]