21767580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:176

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 48679524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 47, 60, 62, 83, 90, 93, 94, 124, 141, 155, 166, 180, 186, 188, 235, 249, 279, 282, 310, 332, 372, 415, 423, 465, 470, 498, 558, 564, 620, 705, 747, 830, 846, 930, 940, 996, 1116, 1245, 1395, 1410, 1457, 1494, 1660, 1692, 1860, 2115, 2490, 2573, 2790, 2820, 2914, 2988, 3735, 3901, 4230, 4371, 4980, 5146, 5580, 5828, 7285, 7470, 7719, 7802, 8460, 8742, 10292, 11703, 12865, 13113, 14570, 14940, 15438, 15604, 17484, 19505, 21855, 23157, 23406, 25730, 26226, 29140, 30876, 35109, 38595, 39010, 43710, 46314, 46812, 51460, 52452, 58515, 65565, 70218, 77190, 78020, 87420, 92628, 115785, 117030, 120931, 131130, 140436, 154380, 175545, 231570, 234060, 241862, 262260, 351090, 362793, 463140, 483724, 604655, 702180, 725586, 1088379, 1209310, 1451172, 1813965, 2176758, 2418620, 3627930, 4353516, 5441895, 7255860, 10883790, 21767580]

約数ペア:

[(1, 21767580), (2, 10883790), (3, 7255860), (4, 5441895), (5, 4353516), (6, 3627930), (9, 2418620), (10, 2176758), (12, 1813965), (15, 1451172), (18, 1209310), (20, 1088379), (30, 725586), (31, 702180), (36, 604655), (45, 483724), (47, 463140), (60, 362793), (62, 351090), (83, 262260), (90, 241862), (93, 234060), (94, 231570), (124, 175545), (141, 154380), (155, 140436), (166, 131130), (180, 120931), (186, 117030), (188, 115785), (235, 92628), (249, 87420), (279, 78020), (282, 77190), (310, 70218), (332, 65565), (372, 58515), (415, 52452), (423, 51460), (465, 46812), (470, 46314), (498, 43710), (558, 39010), (564, 38595), (620, 35109), (705, 30876), (747, 29140), (830, 26226), (846, 25730), (930, 23406), (940, 23157), (996, 21855), (1116, 19505), (1245, 17484), (1395, 15604), (1410, 15438), (1457, 14940), (1494, 14570), (1660, 13113), (1692, 12865), (1860, 11703), (2115, 10292), (2490, 8742), (2573, 8460), (2790, 7802), (2820, 7719), (2914, 7470), (2988, 7285), (3735, 5828), (3901, 5580), (4230, 5146), (4371, 4980)]