1240660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 2857680

約数和(自身を除く): 1617020

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 89, 164, 170, 178, 205, 340, 356, 410, 445, 697, 820, 890, 1394, 1513, 1780, 2788, 3026, 3485, 3649, 6052, 6970, 7298, 7565, 13940, 14596, 15130, 18245, 30260, 36490, 62033, 72980, 124066, 248132, 310165, 620330, 1240660]

約数ペア:

[(1, 1240660), (2, 620330), (4, 310165), (5, 248132), (10, 124066), (17, 72980), (20, 62033), (34, 36490), (41, 30260), (68, 18245), (82, 15130), (85, 14596), (89, 13940), (164, 7565), (170, 7298), (178, 6970), (205, 6052), (340, 3649), (356, 3485), (410, 3026), (445, 2788), (697, 1780), (820, 1513), (890, 1394)]