81471460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{1621}}^1$

素因数の和:1996

約数の個数: 48

約数和(自身を含む): 196197120

約数和(自身を除く): 114725660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 359, 718, 1436, 1621, 1795, 2513, 3242, 3590, 5026, 6484, 7180, 8105, 10052, 11347, 12565, 16210, 22694, 25130, 32420, 45388, 50260, 56735, 113470, 226940, 581939, 1163878, 2327756, 2909695, 4073573, 5819390, 8147146, 11638780, 16294292, 20367865, 40735730, 81471460]

約数ペア:

[(1, 81471460), (2, 40735730), (4, 20367865), (5, 16294292), (7, 11638780), (10, 8147146), (14, 5819390), (20, 4073573), (28, 2909695), (35, 2327756), (70, 1163878), (140, 581939), (359, 226940), (718, 113470), (1436, 56735), (1621, 50260), (1795, 45388), (2513, 32420), (3242, 25130), (3590, 22694), (5026, 16210), (6484, 12565), (7180, 11347), (8105, 10052)]