20928492

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 57513456

約数和(自身を除く): 36584964

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 197, 227, 234, 394, 454, 468, 591, 681, 788, 908, 1182, 1362, 1773, 2043, 2364, 2561, 2724, 2951, 3546, 4086, 5122, 5902, 7092, 7683, 8172, 8853, 10244, 11804, 15366, 17706, 23049, 26559, 30732, 35412, 44719, 46098, 53118, 89438, 92196, 106236, 134157, 178876, 268314, 402471, 536628, 581347, 804942, 1162694, 1609884, 1744041, 2325388, 3488082, 5232123, 6976164, 10464246, 20928492]

約数ペア:

[(1, 20928492), (2, 10464246), (3, 6976164), (4, 5232123), (6, 3488082), (9, 2325388), (12, 1744041), (13, 1609884), (18, 1162694), (26, 804942), (36, 581347), (39, 536628), (52, 402471), (78, 268314), (117, 178876), (156, 134157), (197, 106236), (227, 92196), (234, 89438), (394, 53118), (454, 46098), (468, 44719), (591, 35412), (681, 30732), (788, 26559), (908, 23049), (1182, 17706), (1362, 15366), (1773, 11804), (2043, 10244), (2364, 8853), (2561, 8172), (2724, 7683), (2951, 7092), (3546, 5902), (4086, 5122)]