21502980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1783}}^1$

素因数の和:1865

約数の個数: 72

約数和(自身を含む): 66236352

約数和(自身を除く): 44733372

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 67, 90, 134, 180, 201, 268, 335, 402, 603, 670, 804, 1005, 1206, 1340, 1783, 2010, 2412, 3015, 3566, 4020, 5349, 6030, 7132, 8915, 10698, 12060, 16047, 17830, 21396, 26745, 32094, 35660, 53490, 64188, 80235, 106980, 119461, 160470, 238922, 320940, 358383, 477844, 597305, 716766, 1075149, 1194610, 1433532, 1791915, 2150298, 2389220, 3583830, 4300596, 5375745, 7167660, 10751490, 21502980]

約数ペア:

[(1, 21502980), (2, 10751490), (3, 7167660), (4, 5375745), (5, 4300596), (6, 3583830), (9, 2389220), (10, 2150298), (12, 1791915), (15, 1433532), (18, 1194610), (20, 1075149), (30, 716766), (36, 597305), (45, 477844), (60, 358383), (67, 320940), (90, 238922), (134, 160470), (180, 119461), (201, 106980), (268, 80235), (335, 64188), (402, 53490), (603, 35660), (670, 32094), (804, 26745), (1005, 21396), (1206, 17830), (1340, 16047), (1783, 12060), (2010, 10698), (2412, 8915), (3015, 7132), (3566, 6030), (4020, 5349)]