31809420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 103783680

約数和(自身を除く): 71974260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 71, 76, 90, 95, 114, 131, 142, 171, 180, 190, 213, 228, 262, 284, 285, 342, 355, 380, 393, 426, 524, 570, 639, 655, 684, 710, 786, 852, 855, 1065, 1140, 1179, 1278, 1310, 1349, 1420, 1572, 1710, 1965, 2130, 2358, 2489, 2556, 2620, 2698, 3195, 3420, 3930, 4047, 4260, 4716, 4978, 5396, 5895, 6390, 6745, 7467, 7860, 8094, 9301, 9956, 11790, 12141, 12445, 12780, 13490, 14934, 16188, 18602, 20235, 22401, 23580, 24282, 24890, 26980, 27903, 29868, 37204, 37335, 40470, 44802, 46505, 48564, 49780, 55806, 60705, 74670, 80940, 83709, 89604, 93010, 111612, 112005, 121410, 139515, 149340, 167418, 176719, 186020, 224010, 242820, 279030, 334836, 353438, 418545, 448020, 530157, 558060, 706876, 837090, 883595, 1060314, 1590471, 1674180, 1767190, 2120628, 2650785, 3180942, 3534380, 5301570, 6361884, 7952355, 10603140, 15904710, 31809420]

約数ペア:

[(1, 31809420), (2, 15904710), (3, 10603140), (4, 7952355), (5, 6361884), (6, 5301570), (9, 3534380), (10, 3180942), (12, 2650785), (15, 2120628), (18, 1767190), (19, 1674180), (20, 1590471), (30, 1060314), (36, 883595), (38, 837090), (45, 706876), (57, 558060), (60, 530157), (71, 448020), (76, 418545), (90, 353438), (95, 334836), (114, 279030), (131, 242820), (142, 224010), (171, 186020), (180, 176719), (190, 167418), (213, 149340), (228, 139515), (262, 121410), (284, 112005), (285, 111612), (342, 93010), (355, 89604), (380, 83709), (393, 80940), (426, 74670), (524, 60705), (570, 55806), (639, 49780), (655, 48564), (684, 46505), (710, 44802), (786, 40470), (852, 37335), (855, 37204), (1065, 29868), (1140, 27903), (1179, 26980), (1278, 24890), (1310, 24282), (1349, 23580), (1420, 22401), (1572, 20235), (1710, 18602), (1965, 16188), (2130, 14934), (2358, 13490), (2489, 12780), (2556, 12445), (2620, 12141), (2698, 11790), (3195, 9956), (3420, 9301), (3930, 8094), (4047, 7860), (4260, 7467), (4716, 6745), (4978, 6390), (5396, 5895)]