19215990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2399}}^1$

素因数の和:2501

約数の個数: 48

約数和(自身を含む): 50544000

約数和(自身を除く): 31328010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 89, 90, 178, 267, 445, 534, 801, 890, 1335, 1602, 2399, 2670, 4005, 4798, 7197, 8010, 11995, 14394, 21591, 23990, 35985, 43182, 71970, 107955, 213511, 215910, 427022, 640533, 1067555, 1281066, 1921599, 2135110, 3202665, 3843198, 6405330, 9607995, 19215990]

約数ペア:

[(1, 19215990), (2, 9607995), (3, 6405330), (5, 3843198), (6, 3202665), (9, 2135110), (10, 1921599), (15, 1281066), (18, 1067555), (30, 640533), (45, 427022), (89, 215910), (90, 213511), (178, 107955), (267, 71970), (445, 43182), (534, 35985), (801, 23990), (890, 21591), (1335, 14394), (1602, 11995), (2399, 8010), (2670, 7197), (4005, 4798)]