15500240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:420

約数の個数: 80

約数和(自身を含む): 41783040

約数和(自身を除く): 26282800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 311, 356, 445, 560, 622, 623, 712, 890, 1244, 1246, 1424, 1555, 1780, 2177, 2488, 2492, 3110, 3115, 3560, 4354, 4976, 4984, 6220, 6230, 7120, 8708, 9968, 10885, 12440, 12460, 17416, 21770, 24880, 24920, 27679, 34832, 43540, 49840, 55358, 87080, 110716, 138395, 174160, 193753, 221432, 276790, 387506, 442864, 553580, 775012, 968765, 1107160, 1550024, 1937530, 2214320, 3100048, 3875060, 7750120, 15500240]

約数ペア:

[(1, 15500240), (2, 7750120), (4, 3875060), (5, 3100048), (7, 2214320), (8, 1937530), (10, 1550024), (14, 1107160), (16, 968765), (20, 775012), (28, 553580), (35, 442864), (40, 387506), (56, 276790), (70, 221432), (80, 193753), (89, 174160), (112, 138395), (140, 110716), (178, 87080), (280, 55358), (311, 49840), (356, 43540), (445, 34832), (560, 27679), (622, 24920), (623, 24880), (712, 21770), (890, 17416), (1244, 12460), (1246, 12440), (1424, 10885), (1555, 9968), (1780, 8708), (2177, 7120), (2488, 6230), (2492, 6220), (3110, 4984), (3115, 4976), (3560, 4354)]