20445050

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{359}}^1$

素因数の和:455

約数の個数: 48

約数和(自身を含む): 40979520

約数和(自身を除く): 20534470

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 67, 85, 134, 170, 335, 359, 425, 670, 718, 850, 1139, 1675, 1795, 2278, 3350, 3590, 5695, 6103, 8975, 11390, 12206, 17950, 24053, 28475, 30515, 48106, 56950, 61030, 120265, 152575, 240530, 305150, 408901, 601325, 817802, 1202650, 2044505, 4089010, 10222525, 20445050]

約数ペア:

[(1, 20445050), (2, 10222525), (5, 4089010), (10, 2044505), (17, 1202650), (25, 817802), (34, 601325), (50, 408901), (67, 305150), (85, 240530), (134, 152575), (170, 120265), (335, 61030), (359, 56950), (425, 48106), (670, 30515), (718, 28475), (850, 24053), (1139, 17950), (1675, 12206), (1795, 11390), (2278, 8975), (3350, 6103), (3590, 5695)]