19642840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{73}}^1$

素因数の和:153

約数の個数: 96

約数和(自身を含む): 52907040

約数和(自身を除く): 33264200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 73, 124, 140, 146, 155, 217, 248, 280, 292, 310, 365, 434, 511, 584, 620, 730, 868, 961, 1022, 1085, 1240, 1460, 1736, 1922, 2044, 2170, 2263, 2555, 2920, 3844, 4088, 4340, 4526, 4805, 5110, 6727, 7688, 8680, 9052, 9610, 10220, 11315, 13454, 15841, 18104, 19220, 20440, 22630, 26908, 31682, 33635, 38440, 45260, 53816, 63364, 67270, 70153, 79205, 90520, 126728, 134540, 140306, 158410, 269080, 280612, 316820, 350765, 491071, 561224, 633640, 701530, 982142, 1403060, 1964284, 2455355, 2806120, 3928568, 4910710, 9821420, 19642840]

約数ペア:

[(1, 19642840), (2, 9821420), (4, 4910710), (5, 3928568), (7, 2806120), (8, 2455355), (10, 1964284), (14, 1403060), (20, 982142), (28, 701530), (31, 633640), (35, 561224), (40, 491071), (56, 350765), (62, 316820), (70, 280612), (73, 269080), (124, 158410), (140, 140306), (146, 134540), (155, 126728), (217, 90520), (248, 79205), (280, 70153), (292, 67270), (310, 63364), (365, 53816), (434, 45260), (511, 38440), (584, 33635), (620, 31682), (730, 26908), (868, 22630), (961, 20440), (1022, 19220), (1085, 18104), (1240, 15841), (1460, 13454), (1736, 11315), (1922, 10220), (2044, 9610), (2170, 9052), (2263, 8680), (2555, 7688), (2920, 6727), (3844, 5110), (4088, 4805), (4340, 4526)]