2007686920

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{547}}^1\times {\mathrm{1031}}^1$

素因数の和:1678

約数の個数: 64

約数和(自身を含む): 4580841600

約数和(自身を除く): 2573154680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 547, 712, 890, 1031, 1094, 1780, 2062, 2188, 2735, 3560, 4124, 4376, 5155, 5470, 8248, 10310, 10940, 20620, 21880, 41240, 48683, 91759, 97366, 183518, 194732, 243415, 367036, 389464, 458795, 486830, 563957, 734072, 917590, 973660, 1127914, 1835180, 1947320, 2255828, 2819785, 3670360, 4511656, 5639570, 11279140, 22558280, 50192173, 100384346, 200768692, 250960865, 401537384, 501921730, 1003843460, 2007686920]

約数ペア:

[(1, 2007686920), (2, 1003843460), (4, 501921730), (5, 401537384), (8, 250960865), (10, 200768692), (20, 100384346), (40, 50192173), (89, 22558280), (178, 11279140), (356, 5639570), (445, 4511656), (547, 3670360), (712, 2819785), (890, 2255828), (1031, 1947320), (1094, 1835180), (1780, 1127914), (2062, 973660), (2188, 917590), (2735, 734072), (3560, 563957), (4124, 486830), (4376, 458795), (5155, 389464), (5470, 367036), (8248, 243415), (10310, 194732), (10940, 183518), (20620, 97366), (21880, 91759), (41240, 48683)]