19618750

素因数分解:

$2^1\times 5^5\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:143

約数の個数: 48

約数和(自身を含む): 38153808

約数和(自身を除く): 18535058

約数列:

[1, 2, 5, 10, 25, 43, 50, 73, 86, 125, 146, 215, 250, 365, 430, 625, 730, 1075, 1250, 1825, 2150, 3125, 3139, 3650, 5375, 6250, 6278, 9125, 10750, 15695, 18250, 26875, 31390, 45625, 53750, 78475, 91250, 134375, 156950, 228125, 268750, 392375, 456250, 784750, 1961875, 3923750, 9809375, 19618750]

約数ペア:

[(1, 19618750), (2, 9809375), (5, 3923750), (10, 1961875), (25, 784750), (43, 456250), (50, 392375), (73, 268750), (86, 228125), (125, 156950), (146, 134375), (215, 91250), (250, 78475), (365, 53750), (430, 45625), (625, 31390), (730, 26875), (1075, 18250), (1250, 15695), (1825, 10750), (2150, 9125), (3125, 6278), (3139, 6250), (3650, 5375)]