199995268

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1\times {\mathrm{379}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 390700800

約数和(自身を除く): 190705532

約数列:

[1, 2, 4, 11, 22, 44, 67, 134, 179, 268, 358, 379, 716, 737, 758, 1474, 1516, 1969, 2948, 3938, 4169, 7876, 8338, 11993, 16676, 23986, 25393, 47972, 50786, 67841, 101572, 131923, 135682, 263846, 271364, 279323, 527692, 558646, 746251, 1117292, 1492502, 2985004, 4545347, 9090694, 18181388, 49998817, 99997634, 199995268]

約数ペア:

[(1, 199995268), (2, 99997634), (4, 49998817), (11, 18181388), (22, 9090694), (44, 4545347), (67, 2985004), (134, 1492502), (179, 1117292), (268, 746251), (358, 558646), (379, 527692), (716, 279323), (737, 271364), (758, 263846), (1474, 135682), (1516, 131923), (1969, 101572), (2948, 67841), (3938, 50786), (4169, 47972), (7876, 25393), (8338, 23986), (11993, 16676)]