40985540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:812

約数の個数: 48

約数和(自身を含む): 90599040

約数和(自身を除く): 49613500

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 139, 230, 278, 460, 556, 641, 695, 1282, 1390, 2564, 2780, 3197, 3205, 6394, 6410, 12788, 12820, 14743, 15985, 29486, 31970, 58972, 63940, 73715, 89099, 147430, 178198, 294860, 356396, 445495, 890990, 1781980, 2049277, 4098554, 8197108, 10246385, 20492770, 40985540]

約数ペア:

[(1, 40985540), (2, 20492770), (4, 10246385), (5, 8197108), (10, 4098554), (20, 2049277), (23, 1781980), (46, 890990), (92, 445495), (115, 356396), (139, 294860), (230, 178198), (278, 147430), (460, 89099), (556, 73715), (641, 63940), (695, 58972), (1282, 31970), (1390, 29486), (2564, 15985), (2780, 14743), (3197, 12820), (3205, 12788), (6394, 6410)]