19664560

素因数分解:

$2^4\times 5^1\times {\mathrm{373}}^1\times {\mathrm{659}}^1$

素因数の和:1045

約数の個数: 40

約数和(自身を含む): 45912240

約数和(自身を除く): 26247680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 373, 659, 746, 1318, 1492, 1865, 2636, 2984, 3295, 3730, 5272, 5968, 6590, 7460, 10544, 13180, 14920, 26360, 29840, 52720, 245807, 491614, 983228, 1229035, 1966456, 2458070, 3932912, 4916140, 9832280, 19664560]

約数ペア:

[(1, 19664560), (2, 9832280), (4, 4916140), (5, 3932912), (8, 2458070), (10, 1966456), (16, 1229035), (20, 983228), (40, 491614), (80, 245807), (373, 52720), (659, 29840), (746, 26360), (1318, 14920), (1492, 13180), (1865, 10544), (2636, 7460), (2984, 6590), (3295, 5968), (3730, 5272)]