490210020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{7001}}^1$

素因数の和:7405

約数の個数: 72

約数和(自身を含む): 1491005880

約数和(自身を除く): 1000795860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 389, 778, 1167, 1556, 1945, 2334, 3501, 3890, 4668, 5835, 7001, 7002, 7780, 11670, 14002, 14004, 17505, 21003, 23340, 28004, 35005, 35010, 42006, 63009, 70010, 70020, 84012, 105015, 126018, 140020, 210030, 252036, 315045, 420060, 630090, 1260180, 2723389, 5446778, 8170167, 10893556, 13616945, 16340334, 24510501, 27233890, 32680668, 40850835, 49021002, 54467780, 81701670, 98042004, 122552505, 163403340, 245105010, 490210020]

約数ペア:

[(1, 490210020), (2, 245105010), (3, 163403340), (4, 122552505), (5, 98042004), (6, 81701670), (9, 54467780), (10, 49021002), (12, 40850835), (15, 32680668), (18, 27233890), (20, 24510501), (30, 16340334), (36, 13616945), (45, 10893556), (60, 8170167), (90, 5446778), (180, 2723389), (389, 1260180), (778, 630090), (1167, 420060), (1556, 315045), (1945, 252036), (2334, 210030), (3501, 140020), (3890, 126018), (4668, 105015), (5835, 84012), (7001, 70020), (7002, 70010), (7780, 63009), (11670, 42006), (14002, 35010), (14004, 35005), (17505, 28004), (21003, 23340)]