19949970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{997}}^1$

素因数の和:1059

約数の個数: 64

約数和(自身を含む): 51736320

約数和(自身を除く): 31786350

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 29, 30, 46, 58, 69, 87, 115, 138, 145, 174, 230, 290, 345, 435, 667, 690, 870, 997, 1334, 1994, 2001, 2991, 3335, 4002, 4985, 5982, 6670, 9970, 10005, 14955, 20010, 22931, 28913, 29910, 45862, 57826, 68793, 86739, 114655, 137586, 144565, 173478, 229310, 289130, 343965, 433695, 664999, 687930, 867390, 1329998, 1994997, 3324995, 3989994, 6649990, 9974985, 19949970]

約数ペア:

[(1, 19949970), (2, 9974985), (3, 6649990), (5, 3989994), (6, 3324995), (10, 1994997), (15, 1329998), (23, 867390), (29, 687930), (30, 664999), (46, 433695), (58, 343965), (69, 289130), (87, 229310), (115, 173478), (138, 144565), (145, 137586), (174, 114655), (230, 86739), (290, 68793), (345, 57826), (435, 45862), (667, 29910), (690, 28913), (870, 22931), (997, 20010), (1334, 14955), (1994, 10005), (2001, 9970), (2991, 6670), (3335, 5982), (4002, 4985)]