19197855

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 35268480

約数和(自身を除く): 16070625

約数列:

[1, 3, 5, 9, 15, 29, 45, 47, 87, 141, 145, 235, 261, 313, 423, 435, 705, 939, 1305, 1363, 1565, 2115, 2817, 4089, 4695, 6815, 9077, 12267, 14085, 14711, 20445, 27231, 44133, 45385, 61335, 73555, 81693, 132399, 136155, 220665, 408465, 426619, 661995, 1279857, 2133095, 3839571, 6399285, 19197855]

約数ペア:

[(1, 19197855), (3, 6399285), (5, 3839571), (9, 2133095), (15, 1279857), (29, 661995), (45, 426619), (47, 408465), (87, 220665), (141, 136155), (145, 132399), (235, 81693), (261, 73555), (313, 61335), (423, 45385), (435, 44133), (705, 27231), (939, 20445), (1305, 14711), (1363, 14085), (1565, 12267), (2115, 9077), (2817, 6815), (4089, 4695)]