19994220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{983}}^1$

素因数の和:1111

約数の個数: 72

約数和(自身を含む): 61248096

約数和(自身を除く): 41253876

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 113, 180, 226, 339, 452, 565, 678, 983, 1017, 1130, 1356, 1695, 1966, 2034, 2260, 2949, 3390, 3932, 4068, 4915, 5085, 5898, 6780, 8847, 9830, 10170, 11796, 14745, 17694, 19660, 20340, 29490, 35388, 44235, 58980, 88470, 111079, 176940, 222158, 333237, 444316, 555395, 666474, 999711, 1110790, 1332948, 1666185, 1999422, 2221580, 3332370, 3998844, 4998555, 6664740, 9997110, 19994220]

約数ペア:

[(1, 19994220), (2, 9997110), (3, 6664740), (4, 4998555), (5, 3998844), (6, 3332370), (9, 2221580), (10, 1999422), (12, 1666185), (15, 1332948), (18, 1110790), (20, 999711), (30, 666474), (36, 555395), (45, 444316), (60, 333237), (90, 222158), (113, 176940), (180, 111079), (226, 88470), (339, 58980), (452, 44235), (565, 35388), (678, 29490), (983, 20340), (1017, 19660), (1130, 17694), (1356, 14745), (1695, 11796), (1966, 10170), (2034, 9830), (2260, 8847), (2949, 6780), (3390, 5898), (3932, 5085), (4068, 4915)]