991387198

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{2357}}^1$

素因数の和:2604

約数の個数: 32

約数和(自身を含む): 1604383200

約数和(自身を除く): 612996002

約数列:

[1, 2, 17, 34, 89, 139, 178, 278, 1513, 2357, 2363, 3026, 4714, 4726, 12371, 24742, 40069, 80138, 209773, 210307, 327623, 419546, 420614, 655246, 3566141, 5569591, 7132282, 11139182, 29158447, 58316894, 495693599, 991387198]

約数ペア:

[(1, 991387198), (2, 495693599), (17, 58316894), (34, 29158447), (89, 11139182), (139, 7132282), (178, 5569591), (278, 3566141), (1513, 655246), (2357, 420614), (2363, 419546), (3026, 327623), (4714, 210307), (4726, 209773), (12371, 80138), (24742, 40069)]