7801950

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4001}}^1$

素因数の和:4029

約数の個数: 48

約数和(自身を含む): 20842416

約数和(自身を除く): 13040466

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 4001, 8002, 12003, 20005, 24006, 40010, 52013, 60015, 100025, 104026, 120030, 156039, 200050, 260065, 300075, 312078, 520130, 600150, 780195, 1300325, 1560390, 2600650, 3900975, 7801950]

約数ペア:

[(1, 7801950), (2, 3900975), (3, 2600650), (5, 1560390), (6, 1300325), (10, 780195), (13, 600150), (15, 520130), (25, 312078), (26, 300075), (30, 260065), (39, 200050), (50, 156039), (65, 120030), (75, 104026), (78, 100025), (130, 60015), (150, 52013), (195, 40010), (325, 24006), (390, 20005), (650, 12003), (975, 8002), (1950, 4001)]