21155190

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{769}}^1$

素因数の和:917

約数の個数: 64

約数和(自身を含む): 58544640

約数和(自身を除く): 37389450

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 131, 210, 262, 393, 655, 769, 786, 917, 1310, 1538, 1834, 1965, 2307, 2751, 3845, 3930, 4585, 4614, 5383, 5502, 7690, 9170, 10766, 11535, 13755, 16149, 23070, 26915, 27510, 32298, 53830, 80745, 100739, 161490, 201478, 302217, 503695, 604434, 705173, 1007390, 1410346, 1511085, 2115519, 3022170, 3525865, 4231038, 7051730, 10577595, 21155190]

約数ペア:

[(1, 21155190), (2, 10577595), (3, 7051730), (5, 4231038), (6, 3525865), (7, 3022170), (10, 2115519), (14, 1511085), (15, 1410346), (21, 1007390), (30, 705173), (35, 604434), (42, 503695), (70, 302217), (105, 201478), (131, 161490), (210, 100739), (262, 80745), (393, 53830), (655, 32298), (769, 27510), (786, 26915), (917, 23070), (1310, 16149), (1538, 13755), (1834, 11535), (1965, 10766), (2307, 9170), (2751, 7690), (3845, 5502), (3930, 5383), (4585, 4614)]