18178000

素因数分解:

$2^4\times 5^3\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:233

約数の個数: 80

約数和(自身を含む): 44974800

約数和(自身を除く): 26796800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 125, 149, 200, 244, 250, 298, 305, 400, 488, 500, 596, 610, 745, 976, 1000, 1192, 1220, 1490, 1525, 2000, 2384, 2440, 2980, 3050, 3725, 4880, 5960, 6100, 7450, 7625, 9089, 11920, 12200, 14900, 15250, 18178, 18625, 24400, 29800, 30500, 36356, 37250, 45445, 59600, 61000, 72712, 74500, 90890, 122000, 145424, 149000, 181780, 227225, 298000, 363560, 454450, 727120, 908900, 1136125, 1817800, 2272250, 3635600, 4544500, 9089000, 18178000]

約数ペア:

[(1, 18178000), (2, 9089000), (4, 4544500), (5, 3635600), (8, 2272250), (10, 1817800), (16, 1136125), (20, 908900), (25, 727120), (40, 454450), (50, 363560), (61, 298000), (80, 227225), (100, 181780), (122, 149000), (125, 145424), (149, 122000), (200, 90890), (244, 74500), (250, 72712), (298, 61000), (305, 59600), (400, 45445), (488, 37250), (500, 36356), (596, 30500), (610, 29800), (745, 24400), (976, 18625), (1000, 18178), (1192, 15250), (1220, 14900), (1490, 12200), (1525, 11920), (2000, 9089), (2384, 7625), (2440, 7450), (2980, 6100), (3050, 5960), (3725, 4880)]