19807040

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{331}}^1$

素因数の和:376

約数の個数: 112

約数和(自身を含む): 54644544

約数和(自身を除く): 34837504

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 272, 320, 331, 340, 352, 374, 440, 544, 662, 680, 704, 748, 880, 935, 1088, 1324, 1360, 1496, 1655, 1760, 1870, 2648, 2720, 2992, 3310, 3520, 3641, 3740, 5296, 5440, 5627, 5984, 6620, 7282, 7480, 10592, 11254, 11968, 13240, 14564, 14960, 18205, 21184, 22508, 26480, 28135, 29128, 29920, 36410, 45016, 52960, 56270, 58256, 59840, 61897, 72820, 90032, 105920, 112540, 116512, 123794, 145640, 180064, 225080, 233024, 247588, 291280, 309485, 360128, 450160, 495176, 582560, 618970, 900320, 990352, 1165120, 1237940, 1800640, 1980704, 2475880, 3961408, 4951760, 9903520, 19807040]

約数ペア:

[(1, 19807040), (2, 9903520), (4, 4951760), (5, 3961408), (8, 2475880), (10, 1980704), (11, 1800640), (16, 1237940), (17, 1165120), (20, 990352), (22, 900320), (32, 618970), (34, 582560), (40, 495176), (44, 450160), (55, 360128), (64, 309485), (68, 291280), (80, 247588), (85, 233024), (88, 225080), (110, 180064), (136, 145640), (160, 123794), (170, 116512), (176, 112540), (187, 105920), (220, 90032), (272, 72820), (320, 61897), (331, 59840), (340, 58256), (352, 56270), (374, 52960), (440, 45016), (544, 36410), (662, 29920), (680, 29128), (704, 28135), (748, 26480), (880, 22508), (935, 21184), (1088, 18205), (1324, 14960), (1360, 14564), (1496, 13240), (1655, 11968), (1760, 11254), (1870, 10592), (2648, 7480), (2720, 7282), (2992, 6620), (3310, 5984), (3520, 5627), (3641, 5440), (3740, 5296)]