781796740

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{773}}^1\times {\mathrm{829}}^1$

素因数の和:1672

約数の個数: 48

約数和(自身を含む): 1672861680

約数和(自身を除く): 891064940

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 773, 829, 1220, 1546, 1658, 3092, 3316, 3865, 4145, 7730, 8290, 15460, 16580, 47153, 50569, 94306, 101138, 188612, 202276, 235765, 252845, 471530, 505690, 640817, 943060, 1011380, 1281634, 2563268, 3204085, 6408170, 12816340, 39089837, 78179674, 156359348, 195449185, 390898370, 781796740]

約数ペア:

[(1, 781796740), (2, 390898370), (4, 195449185), (5, 156359348), (10, 78179674), (20, 39089837), (61, 12816340), (122, 6408170), (244, 3204085), (305, 2563268), (610, 1281634), (773, 1011380), (829, 943060), (1220, 640817), (1546, 505690), (1658, 471530), (3092, 252845), (3316, 235765), (3865, 202276), (4145, 188612), (7730, 101138), (8290, 94306), (15460, 50569), (16580, 47153)]