312991120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{300953}}^1$

素因数の和:300979

約数の個数: 40

約数和(自身を含む): 783684216

約数和(自身を除く): 470693096

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 300953, 601906, 1203812, 1504765, 2407624, 3009530, 3912389, 4815248, 6019060, 7824778, 12038120, 15649556, 19561945, 24076240, 31299112, 39123890, 62598224, 78247780, 156495560, 312991120]

約数ペア:

[(1, 312991120), (2, 156495560), (4, 78247780), (5, 62598224), (8, 39123890), (10, 31299112), (13, 24076240), (16, 19561945), (20, 15649556), (26, 12038120), (40, 7824778), (52, 6019060), (65, 4815248), (80, 3912389), (104, 3009530), (130, 2407624), (208, 1504765), (260, 1203812), (520, 601906), (1040, 300953)]