20898900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2111}}^1$

素因数の和:2142

約数の個数: 108

約数和(自身を含む): 71495424

約数和(自身を除く): 50596524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 33, 36, 44, 45, 50, 55, 60, 66, 75, 90, 99, 100, 110, 132, 150, 165, 180, 198, 220, 225, 275, 300, 330, 396, 450, 495, 550, 660, 825, 900, 990, 1100, 1650, 1980, 2111, 2475, 3300, 4222, 4950, 6333, 8444, 9900, 10555, 12666, 18999, 21110, 23221, 25332, 31665, 37998, 42220, 46442, 52775, 63330, 69663, 75996, 92884, 94995, 105550, 116105, 126660, 139326, 158325, 189990, 208989, 211100, 232210, 278652, 316650, 348315, 379980, 417978, 464420, 474975, 580525, 633300, 696630, 835956, 949950, 1044945, 1161050, 1393260, 1741575, 1899900, 2089890, 2322100, 3483150, 4179780, 5224725, 6966300, 10449450, 20898900]

約数ペア:

[(1, 20898900), (2, 10449450), (3, 6966300), (4, 5224725), (5, 4179780), (6, 3483150), (9, 2322100), (10, 2089890), (11, 1899900), (12, 1741575), (15, 1393260), (18, 1161050), (20, 1044945), (22, 949950), (25, 835956), (30, 696630), (33, 633300), (36, 580525), (44, 474975), (45, 464420), (50, 417978), (55, 379980), (60, 348315), (66, 316650), (75, 278652), (90, 232210), (99, 211100), (100, 208989), (110, 189990), (132, 158325), (150, 139326), (165, 126660), (180, 116105), (198, 105550), (220, 94995), (225, 92884), (275, 75996), (300, 69663), (330, 63330), (396, 52775), (450, 46442), (495, 42220), (550, 37998), (660, 31665), (825, 25332), (900, 23221), (990, 21110), (1100, 18999), (1650, 12666), (1980, 10555), (2111, 9900), (2475, 8444), (3300, 6333), (4222, 4950)]