278319980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{5591}}^1$

素因数の和:5750

約数の個数: 48

約数和(自身を含む): 620040960

約数和(自身を除く): 341720980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 380, 524, 655, 1310, 2489, 2620, 4978, 5591, 9956, 11182, 12445, 22364, 24890, 27955, 49780, 55910, 106229, 111820, 212458, 424916, 531145, 732421, 1062290, 1464842, 2124580, 2929684, 3662105, 7324210, 13915999, 14648420, 27831998, 55663996, 69579995, 139159990, 278319980]

約数ペア:

[(1, 278319980), (2, 139159990), (4, 69579995), (5, 55663996), (10, 27831998), (19, 14648420), (20, 13915999), (38, 7324210), (76, 3662105), (95, 2929684), (131, 2124580), (190, 1464842), (262, 1062290), (380, 732421), (524, 531145), (655, 424916), (1310, 212458), (2489, 111820), (2620, 106229), (4978, 55910), (5591, 49780), (9956, 27955), (11182, 24890), (12445, 22364)]