21489650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4723}}^1$

素因数の和:4755

約数の個数: 48

約数和(自身を含む): 49205184

約数和(自身を除く): 27715534

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 91, 130, 175, 182, 325, 350, 455, 650, 910, 2275, 4550, 4723, 9446, 23615, 33061, 47230, 61399, 66122, 118075, 122798, 165305, 236150, 306995, 330610, 429793, 613990, 826525, 859586, 1534975, 1653050, 2148965, 3069950, 4297930, 10744825, 21489650]

約数ペア:

[(1, 21489650), (2, 10744825), (5, 4297930), (7, 3069950), (10, 2148965), (13, 1653050), (14, 1534975), (25, 859586), (26, 826525), (35, 613990), (50, 429793), (65, 330610), (70, 306995), (91, 236150), (130, 165305), (175, 122798), (182, 118075), (325, 66122), (350, 61399), (455, 47230), (650, 33061), (910, 23615), (2275, 9446), (4550, 4723)]