1781520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1$

素因数の和:600

約数の個数: 80

約数和(自身を含む): 5957952

約数和(自身を除く): 4176432

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 571, 624, 780, 1040, 1142, 1560, 1713, 2284, 2855, 3120, 3426, 4568, 5710, 6852, 7423, 8565, 9136, 11420, 13704, 14846, 17130, 22269, 22840, 27408, 29692, 34260, 37115, 44538, 45680, 59384, 68520, 74230, 89076, 111345, 118768, 137040, 148460, 178152, 222690, 296920, 356304, 445380, 593840, 890760, 1781520]

約数ペア:

[(1, 1781520), (2, 890760), (3, 593840), (4, 445380), (5, 356304), (6, 296920), (8, 222690), (10, 178152), (12, 148460), (13, 137040), (15, 118768), (16, 111345), (20, 89076), (24, 74230), (26, 68520), (30, 59384), (39, 45680), (40, 44538), (48, 37115), (52, 34260), (60, 29692), (65, 27408), (78, 22840), (80, 22269), (104, 17130), (120, 14846), (130, 13704), (156, 11420), (195, 9136), (208, 8565), (240, 7423), (260, 6852), (312, 5710), (390, 4568), (520, 3426), (571, 3120), (624, 2855), (780, 2284), (1040, 1713), (1142, 1560)]