12540380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 28227360

約数和(自身を除く): 15686980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 541, 610, 1082, 1159, 1220, 2164, 2318, 2705, 4636, 5410, 5795, 10279, 10820, 11590, 20558, 23180, 33001, 41116, 51395, 66002, 102790, 132004, 165005, 205580, 330010, 627019, 660020, 1254038, 2508076, 3135095, 6270190, 12540380]

約数ペア:

[(1, 12540380), (2, 6270190), (4, 3135095), (5, 2508076), (10, 1254038), (19, 660020), (20, 627019), (38, 330010), (61, 205580), (76, 165005), (95, 132004), (122, 102790), (190, 66002), (244, 51395), (305, 41116), (380, 33001), (541, 23180), (610, 20558), (1082, 11590), (1159, 10820), (1220, 10279), (2164, 5795), (2318, 5410), (2705, 4636)]