21450940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9013}}^1$

素因数の和:9046

約数の個数: 48

約数和(自身を含む): 54516672

約数和(自身を除く): 33065732

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 9013, 18026, 36052, 45065, 63091, 90130, 126182, 153221, 180260, 252364, 306442, 315455, 612884, 630910, 766105, 1072547, 1261820, 1532210, 2145094, 3064420, 4290188, 5362735, 10725470, 21450940]

約数ペア:

[(1, 21450940), (2, 10725470), (4, 5362735), (5, 4290188), (7, 3064420), (10, 2145094), (14, 1532210), (17, 1261820), (20, 1072547), (28, 766105), (34, 630910), (35, 612884), (68, 315455), (70, 306442), (85, 252364), (119, 180260), (140, 153221), (170, 126182), (238, 90130), (340, 63091), (476, 45065), (595, 36052), (1190, 18026), (2380, 9013)]