2019320980

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{439}}^1\times {\mathrm{659}}^1$

素因数の和:1456

約数の個数: 48

約数和(自身を含む): 4268880000

約数和(自身を除く): 2249559020

約数列:

[1, 2, 4, 5, 10, 20, 349, 439, 659, 698, 878, 1318, 1396, 1745, 1756, 2195, 2636, 3295, 3490, 4390, 6590, 6980, 8780, 13180, 153211, 229991, 289301, 306422, 459982, 578602, 612844, 766055, 919964, 1149955, 1157204, 1446505, 1532110, 2299910, 2893010, 3064220, 4599820, 5786020, 100966049, 201932098, 403864196, 504830245, 1009660490, 2019320980]

約数ペア:

[(1, 2019320980), (2, 1009660490), (4, 504830245), (5, 403864196), (10, 201932098), (20, 100966049), (349, 5786020), (439, 4599820), (659, 3064220), (698, 2893010), (878, 2299910), (1318, 1532110), (1396, 1446505), (1745, 1157204), (1756, 1149955), (2195, 919964), (2636, 766055), (3295, 612844), (3490, 578602), (4390, 459982), (6590, 306422), (6980, 289301), (8780, 229991), (13180, 153211)]