21457320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1097}}^1$

素因数の和:1274

約数の個数: 64

約数和(自身を含む): 64825920

約数和(自身を除く): 43368600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 163, 326, 489, 652, 815, 978, 1097, 1304, 1630, 1956, 2194, 2445, 3260, 3291, 3912, 4388, 4890, 5485, 6520, 6582, 8776, 9780, 10970, 13164, 16455, 19560, 21940, 26328, 32910, 43880, 65820, 131640, 178811, 357622, 536433, 715244, 894055, 1072866, 1430488, 1788110, 2145732, 2682165, 3576220, 4291464, 5364330, 7152440, 10728660, 21457320]

約数ペア:

[(1, 21457320), (2, 10728660), (3, 7152440), (4, 5364330), (5, 4291464), (6, 3576220), (8, 2682165), (10, 2145732), (12, 1788110), (15, 1430488), (20, 1072866), (24, 894055), (30, 715244), (40, 536433), (60, 357622), (120, 178811), (163, 131640), (326, 65820), (489, 43880), (652, 32910), (815, 26328), (978, 21940), (1097, 19560), (1304, 16455), (1630, 13164), (1956, 10970), (2194, 9780), (2445, 8776), (3260, 6582), (3291, 6520), (3912, 5485), (4388, 4890)]