64721000

素因数分解:

$2^3\times 5^3\times {\mathrm{61}}^1\times {\mathrm{1061}}^1$

素因数の和:1143

約数の個数: 64

約数和(自身を含む): 154074960

約数和(自身を除く): 89353960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 125, 200, 244, 250, 305, 488, 500, 610, 1000, 1061, 1220, 1525, 2122, 2440, 3050, 4244, 5305, 6100, 7625, 8488, 10610, 12200, 15250, 21220, 26525, 30500, 42440, 53050, 61000, 64721, 106100, 129442, 132625, 212200, 258884, 265250, 323605, 517768, 530500, 647210, 1061000, 1294420, 1618025, 2588840, 3236050, 6472100, 8090125, 12944200, 16180250, 32360500, 64721000]

約数ペア:

[(1, 64721000), (2, 32360500), (4, 16180250), (5, 12944200), (8, 8090125), (10, 6472100), (20, 3236050), (25, 2588840), (40, 1618025), (50, 1294420), (61, 1061000), (100, 647210), (122, 530500), (125, 517768), (200, 323605), (244, 265250), (250, 258884), (305, 212200), (488, 132625), (500, 129442), (610, 106100), (1000, 64721), (1061, 61000), (1220, 53050), (1525, 42440), (2122, 30500), (2440, 26525), (3050, 21220), (4244, 15250), (5305, 12200), (6100, 10610), (7625, 8488)]