78674980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{1553}}^1$

素因数の和:1728

約数の個数: 48

約数和(自身を含む): 176223600

約数和(自身を除く): 97548620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 149, 170, 298, 340, 596, 745, 1490, 1553, 2533, 2980, 3106, 5066, 6212, 7765, 10132, 12665, 15530, 25330, 26401, 31060, 50660, 52802, 105604, 132005, 231397, 264010, 462794, 528020, 925588, 1156985, 2313970, 3933749, 4627940, 7867498, 15734996, 19668745, 39337490, 78674980]

約数ペア:

[(1, 78674980), (2, 39337490), (4, 19668745), (5, 15734996), (10, 7867498), (17, 4627940), (20, 3933749), (34, 2313970), (68, 1156985), (85, 925588), (149, 528020), (170, 462794), (298, 264010), (340, 231397), (596, 132005), (745, 105604), (1490, 52802), (1553, 50660), (2533, 31060), (2980, 26401), (3106, 25330), (5066, 15530), (6212, 12665), (7765, 10132)]