20899980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1733}}^1$

素因数の和:1815

約数の個数: 72

約数和(自身を含む): 64379952

約数和(自身を除く): 43479972

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 67, 90, 134, 180, 201, 268, 335, 402, 603, 670, 804, 1005, 1206, 1340, 1733, 2010, 2412, 3015, 3466, 4020, 5199, 6030, 6932, 8665, 10398, 12060, 15597, 17330, 20796, 25995, 31194, 34660, 51990, 62388, 77985, 103980, 116111, 155970, 232222, 311940, 348333, 464444, 580555, 696666, 1044999, 1161110, 1393332, 1741665, 2089998, 2322220, 3483330, 4179996, 5224995, 6966660, 10449990, 20899980]

約数ペア:

[(1, 20899980), (2, 10449990), (3, 6966660), (4, 5224995), (5, 4179996), (6, 3483330), (9, 2322220), (10, 2089998), (12, 1741665), (15, 1393332), (18, 1161110), (20, 1044999), (30, 696666), (36, 580555), (45, 464444), (60, 348333), (67, 311940), (90, 232222), (134, 155970), (180, 116111), (201, 103980), (268, 77985), (335, 62388), (402, 51990), (603, 34660), (670, 31194), (804, 25995), (1005, 20796), (1206, 17330), (1340, 15597), (1733, 12060), (2010, 10398), (2412, 8665), (3015, 6932), (3466, 6030), (4020, 5199)]