19506580

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 42497280

約数和(自身を除く): 22990700

約数列:

[1, 2, 4, 5, 10, 20, 59, 61, 118, 122, 236, 244, 271, 295, 305, 542, 590, 610, 1084, 1180, 1220, 1355, 2710, 3599, 5420, 7198, 14396, 15989, 16531, 17995, 31978, 33062, 35990, 63956, 66124, 71980, 79945, 82655, 159890, 165310, 319780, 330620, 975329, 1950658, 3901316, 4876645, 9753290, 19506580]

約数ペア:

[(1, 19506580), (2, 9753290), (4, 4876645), (5, 3901316), (10, 1950658), (20, 975329), (59, 330620), (61, 319780), (118, 165310), (122, 159890), (236, 82655), (244, 79945), (271, 71980), (295, 66124), (305, 63956), (542, 35990), (590, 33062), (610, 31978), (1084, 17995), (1180, 16531), (1220, 15989), (1355, 14396), (2710, 7198), (3599, 5420)]