9978280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{619}}^1$

素因数の和:674

約数の個数: 64

約数和(自身を含む): 24998400

約数和(自身を除く): 15020120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 619, 620, 806, 1238, 1240, 1612, 2015, 2476, 3095, 3224, 4030, 4952, 6190, 8047, 8060, 12380, 16094, 16120, 19189, 24760, 32188, 38378, 40235, 64376, 76756, 80470, 95945, 153512, 160940, 191890, 249457, 321880, 383780, 498914, 767560, 997828, 1247285, 1995656, 2494570, 4989140, 9978280]

約数ペア:

[(1, 9978280), (2, 4989140), (4, 2494570), (5, 1995656), (8, 1247285), (10, 997828), (13, 767560), (20, 498914), (26, 383780), (31, 321880), (40, 249457), (52, 191890), (62, 160940), (65, 153512), (104, 95945), (124, 80470), (130, 76756), (155, 64376), (248, 40235), (260, 38378), (310, 32188), (403, 24760), (520, 19189), (619, 16120), (620, 16094), (806, 12380), (1238, 8060), (1240, 8047), (1612, 6190), (2015, 4952), (2476, 4030), (3095, 3224)]