39781980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31573}}^1$

素因数の和:31595

約数の個数: 72

約数和(自身を含む): 137915232

約数和(自身を除く): 98133252

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 31573, 63146, 94719, 126292, 157865, 189438, 221011, 284157, 315730, 378876, 442022, 473595, 568314, 631460, 663033, 884044, 947190, 1105055, 1136628, 1326066, 1420785, 1894380, 1989099, 2210110, 2652132, 2841570, 3315165, 3978198, 4420220, 5683140, 6630330, 7956396, 9945495, 13260660, 19890990, 39781980]

約数ペア:

[(1, 39781980), (2, 19890990), (3, 13260660), (4, 9945495), (5, 7956396), (6, 6630330), (7, 5683140), (9, 4420220), (10, 3978198), (12, 3315165), (14, 2841570), (15, 2652132), (18, 2210110), (20, 1989099), (21, 1894380), (28, 1420785), (30, 1326066), (35, 1136628), (36, 1105055), (42, 947190), (45, 884044), (60, 663033), (63, 631460), (70, 568314), (84, 473595), (90, 442022), (105, 378876), (126, 315730), (140, 284157), (180, 221011), (210, 189438), (252, 157865), (315, 126292), (420, 94719), (630, 63146), (1260, 31573)]