20978280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3067}}^1$

素因数の和:3103

約数の個数: 96

約数和(自身を含む): 71791200

約数和(自身を除く): 50812920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 171, 180, 190, 228, 285, 342, 360, 380, 456, 570, 684, 760, 855, 1140, 1368, 1710, 2280, 3067, 3420, 6134, 6840, 9201, 12268, 15335, 18402, 24536, 27603, 30670, 36804, 46005, 55206, 58273, 61340, 73608, 92010, 110412, 116546, 122680, 138015, 174819, 184020, 220824, 233092, 276030, 291365, 349638, 368040, 466184, 524457, 552060, 582730, 699276, 874095, 1048914, 1104120, 1165460, 1398552, 1748190, 2097828, 2330920, 2622285, 3496380, 4195656, 5244570, 6992760, 10489140, 20978280]

約数ペア:

[(1, 20978280), (2, 10489140), (3, 6992760), (4, 5244570), (5, 4195656), (6, 3496380), (8, 2622285), (9, 2330920), (10, 2097828), (12, 1748190), (15, 1398552), (18, 1165460), (19, 1104120), (20, 1048914), (24, 874095), (30, 699276), (36, 582730), (38, 552060), (40, 524457), (45, 466184), (57, 368040), (60, 349638), (72, 291365), (76, 276030), (90, 233092), (95, 220824), (114, 184020), (120, 174819), (152, 138015), (171, 122680), (180, 116546), (190, 110412), (228, 92010), (285, 73608), (342, 61340), (360, 58273), (380, 55206), (456, 46005), (570, 36804), (684, 30670), (760, 27603), (855, 24536), (1140, 18402), (1368, 15335), (1710, 12268), (2280, 9201), (3067, 6840), (3420, 6134)]