78298540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 167731200

約数和(自身を除く): 89432660

約数列:

[1, 2, 4, 5, 10, 20, 103, 191, 199, 206, 382, 398, 412, 515, 764, 796, 955, 995, 1030, 1910, 1990, 2060, 3820, 3980, 19673, 20497, 38009, 39346, 40994, 76018, 78692, 81988, 98365, 102485, 152036, 190045, 196730, 204970, 380090, 393460, 409940, 760180, 3914927, 7829854, 15659708, 19574635, 39149270, 78298540]

約数ペア:

[(1, 78298540), (2, 39149270), (4, 19574635), (5, 15659708), (10, 7829854), (20, 3914927), (103, 760180), (191, 409940), (199, 393460), (206, 380090), (382, 204970), (398, 196730), (412, 190045), (515, 152036), (764, 102485), (796, 98365), (955, 81988), (995, 78692), (1030, 76018), (1910, 40994), (1990, 39346), (2060, 38009), (3820, 20497), (3980, 19673)]