20547100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:367

約数の個数: 72

約数和(自身を含む): 51559200

約数和(自身を除く): 31012100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 149, 175, 197, 298, 350, 394, 596, 700, 745, 788, 985, 1043, 1379, 1490, 1970, 2086, 2758, 2980, 3725, 3940, 4172, 4925, 5215, 5516, 6895, 7450, 9850, 10430, 13790, 14900, 19700, 20860, 26075, 27580, 29353, 34475, 52150, 58706, 68950, 104300, 117412, 137900, 146765, 205471, 293530, 410942, 587060, 733825, 821884, 1027355, 1467650, 2054710, 2935300, 4109420, 5136775, 10273550, 20547100]

約数ペア:

[(1, 20547100), (2, 10273550), (4, 5136775), (5, 4109420), (7, 2935300), (10, 2054710), (14, 1467650), (20, 1027355), (25, 821884), (28, 733825), (35, 587060), (50, 410942), (70, 293530), (100, 205471), (140, 146765), (149, 137900), (175, 117412), (197, 104300), (298, 68950), (350, 58706), (394, 52150), (596, 34475), (700, 29353), (745, 27580), (788, 26075), (985, 20860), (1043, 19700), (1379, 14900), (1490, 13790), (1970, 10430), (2086, 9850), (2758, 7450), (2980, 6895), (3725, 5516), (3940, 5215), (4172, 4925)]