28991950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:158

約数の個数: 72

約数和(自身を含む): 60451488

約数和(自身を除く): 31459538

約数列:

[1, 2, 5, 10, 13, 25, 26, 47, 50, 65, 73, 94, 130, 146, 169, 235, 325, 338, 365, 470, 611, 650, 730, 845, 949, 1175, 1222, 1690, 1825, 1898, 2350, 3055, 3431, 3650, 4225, 4745, 6110, 6862, 7943, 8450, 9490, 12337, 15275, 15886, 17155, 23725, 24674, 30550, 34310, 39715, 44603, 47450, 61685, 79430, 85775, 89206, 123370, 171550, 198575, 223015, 308425, 397150, 446030, 579839, 616850, 1115075, 1159678, 2230150, 2899195, 5798390, 14495975, 28991950]

約数ペア:

[(1, 28991950), (2, 14495975), (5, 5798390), (10, 2899195), (13, 2230150), (25, 1159678), (26, 1115075), (47, 616850), (50, 579839), (65, 446030), (73, 397150), (94, 308425), (130, 223015), (146, 198575), (169, 171550), (235, 123370), (325, 89206), (338, 85775), (365, 79430), (470, 61685), (611, 47450), (650, 44603), (730, 39715), (845, 34310), (949, 30550), (1175, 24674), (1222, 23725), (1690, 17155), (1825, 15886), (1898, 15275), (2350, 12337), (3055, 9490), (3431, 8450), (3650, 7943), (4225, 6862), (4745, 6110)]