1781940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1747}}^1$

素因数の和:1776

約数の個数: 48

約数和(自身を含む): 5285952

約数和(自身を除く): 3504012

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 1747, 3494, 5241, 6988, 8735, 10482, 17470, 20964, 26205, 29699, 34940, 52410, 59398, 89097, 104820, 118796, 148495, 178194, 296990, 356388, 445485, 593980, 890970, 1781940]

約数ペア:

[(1, 1781940), (2, 890970), (3, 593980), (4, 445485), (5, 356388), (6, 296990), (10, 178194), (12, 148495), (15, 118796), (17, 104820), (20, 89097), (30, 59398), (34, 52410), (51, 34940), (60, 29699), (68, 26205), (85, 20964), (102, 17470), (170, 10482), (204, 8735), (255, 6988), (340, 5241), (510, 3494), (1020, 1747)]