647580880

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{132701}}^1$

素因数の和:132775

約数の個数: 40

約数和(自身を含む): 1530319464

約数和(自身を除く): 882738584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 132701, 265402, 530804, 663505, 1061608, 1327010, 2123216, 2654020, 5308040, 8094761, 10616080, 16189522, 32379044, 40473805, 64758088, 80947610, 129516176, 161895220, 323790440, 647580880]

約数ペア:

[(1, 647580880), (2, 323790440), (4, 161895220), (5, 129516176), (8, 80947610), (10, 64758088), (16, 40473805), (20, 32379044), (40, 16189522), (61, 10616080), (80, 8094761), (122, 5308040), (244, 2654020), (305, 2123216), (488, 1327010), (610, 1061608), (976, 663505), (1220, 530804), (2440, 265402), (4880, 132701)]