66178900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:665

約数の個数: 72

約数和(自身を含む): 153913760

約数和(自身を除く): 87734860

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 61, 76, 95, 100, 122, 190, 244, 305, 380, 475, 571, 610, 950, 1142, 1159, 1220, 1525, 1900, 2284, 2318, 2855, 3050, 4636, 5710, 5795, 6100, 10849, 11420, 11590, 14275, 21698, 23180, 28550, 28975, 34831, 43396, 54245, 57100, 57950, 69662, 108490, 115900, 139324, 174155, 216980, 271225, 348310, 542450, 661789, 696620, 870775, 1084900, 1323578, 1741550, 2647156, 3308945, 3483100, 6617890, 13235780, 16544725, 33089450, 66178900]

約数ペア:

[(1, 66178900), (2, 33089450), (4, 16544725), (5, 13235780), (10, 6617890), (19, 3483100), (20, 3308945), (25, 2647156), (38, 1741550), (50, 1323578), (61, 1084900), (76, 870775), (95, 696620), (100, 661789), (122, 542450), (190, 348310), (244, 271225), (305, 216980), (380, 174155), (475, 139324), (571, 115900), (610, 108490), (950, 69662), (1142, 57950), (1159, 57100), (1220, 54245), (1525, 43396), (1900, 34831), (2284, 28975), (2318, 28550), (2855, 23180), (3050, 21698), (4636, 14275), (5710, 11590), (5795, 11420), (6100, 10849)]