21999900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5641}}^1$

素因数の和:5671

約数の個数: 72

約数和(自身を含む): 68561584

約数和(自身を除く): 46561684

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5641, 11282, 16923, 22564, 28205, 33846, 56410, 67692, 73333, 84615, 112820, 141025, 146666, 169230, 219999, 282050, 293332, 338460, 366665, 423075, 439998, 564100, 733330, 846150, 879996, 1099995, 1466660, 1692300, 1833325, 2199990, 3666650, 4399980, 5499975, 7333300, 10999950, 21999900]

約数ペア:

[(1, 21999900), (2, 10999950), (3, 7333300), (4, 5499975), (5, 4399980), (6, 3666650), (10, 2199990), (12, 1833325), (13, 1692300), (15, 1466660), (20, 1099995), (25, 879996), (26, 846150), (30, 733330), (39, 564100), (50, 439998), (52, 423075), (60, 366665), (65, 338460), (75, 293332), (78, 282050), (100, 219999), (130, 169230), (150, 146666), (156, 141025), (195, 112820), (260, 84615), (300, 73333), (325, 67692), (390, 56410), (650, 33846), (780, 28205), (975, 22564), (1300, 16923), (1950, 11282), (3900, 5641)]