1223395780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{22171}}^1$

素因数の和:22300

約数の個数: 48

約数和(自身を含む): 2681925120

約数和(自身を除く): 1458529340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 2759, 5518, 11036, 13795, 22171, 27590, 44342, 55180, 88684, 110855, 221710, 443420, 687301, 1374602, 1973219, 2749204, 3436505, 3946438, 6873010, 7892876, 9866095, 13746020, 19732190, 39464380, 61169789, 122339578, 244679156, 305848945, 611697890, 1223395780]

約数ペア:

[(1, 1223395780), (2, 611697890), (4, 305848945), (5, 244679156), (10, 122339578), (20, 61169789), (31, 39464380), (62, 19732190), (89, 13746020), (124, 9866095), (155, 7892876), (178, 6873010), (310, 3946438), (356, 3436505), (445, 2749204), (620, 1973219), (890, 1374602), (1780, 687301), (2759, 443420), (5518, 221710), (11036, 110855), (13795, 88684), (22171, 55180), (27590, 44342)]