261840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{1091}}^1$

素因数の和:1107

約数の個数: 40

約数和(自身を含む): 812448

約数和(自身を除く): 550608

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 1091, 2182, 3273, 4364, 5455, 6546, 8728, 10910, 13092, 16365, 17456, 21820, 26184, 32730, 43640, 52368, 65460, 87280, 130920, 261840]

約数ペア:

[(1, 261840), (2, 130920), (3, 87280), (4, 65460), (5, 52368), (6, 43640), (8, 32730), (10, 26184), (12, 21820), (15, 17456), (16, 16365), (20, 13092), (24, 10910), (30, 8728), (40, 6546), (48, 5455), (60, 4364), (80, 3273), (120, 2182), (240, 1091)]