18727380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1$

素因数の和:278

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 47316780

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, 89, 90, 105, 126, 140, 167, 178, 180, 210, 252, 267, 315, 334, 356, 420, 445, 501, 534, 623, 630, 668, 801, 835, 890, 1002, 1068, 1169, 1246, 1260, 1335, 1503, 1602, 1670, 1780, 1869, 2004, 2338, 2492, 2505, 2670, 3006, 3115, 3204, 3340, 3507, 3738, 4005, 4676, 5010, 5340, 5607, 5845, 6012, 6230, 7014, 7476, 7515, 8010, 9345, 10020, 10521, 11214, 11690, 12460, 14028, 14863, 15030, 16020, 17535, 18690, 21042, 22428, 23380, 28035, 29726, 30060, 35070, 37380, 42084, 44589, 52605, 56070, 59452, 70140, 74315, 89178, 104041, 105210, 112140, 133767, 148630, 178356, 208082, 210420, 222945, 267534, 297260, 312123, 416164, 445890, 520205, 535068, 624246, 668835, 891780, 936369, 1040410, 1248492, 1337670, 1560615, 1872738, 2080820, 2675340, 3121230, 3745476, 4681845, 6242460, 9363690, 18727380]

約数ペア:

[(1, 18727380), (2, 9363690), (3, 6242460), (4, 4681845), (5, 3745476), (6, 3121230), (7, 2675340), (9, 2080820), (10, 1872738), (12, 1560615), (14, 1337670), (15, 1248492), (18, 1040410), (20, 936369), (21, 891780), (28, 668835), (30, 624246), (35, 535068), (36, 520205), (42, 445890), (45, 416164), (60, 312123), (63, 297260), (70, 267534), (84, 222945), (89, 210420), (90, 208082), (105, 178356), (126, 148630), (140, 133767), (167, 112140), (178, 105210), (180, 104041), (210, 89178), (252, 74315), (267, 70140), (315, 59452), (334, 56070), (356, 52605), (420, 44589), (445, 42084), (501, 37380), (534, 35070), (623, 30060), (630, 29726), (668, 28035), (801, 23380), (835, 22428), (890, 21042), (1002, 18690), (1068, 17535), (1169, 16020), (1246, 15030), (1260, 14863), (1335, 14028), (1503, 12460), (1602, 11690), (1670, 11214), (1780, 10521), (1869, 10020), (2004, 9345), (2338, 8010), (2492, 7515), (2505, 7476), (2670, 7014), (3006, 6230), (3115, 6012), (3204, 5845), (3340, 5607), (3507, 5340), (3738, 5010), (4005, 4676)]