21692870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 44236800

約数和(自身を除く): 22543930

約数列:

[1, 2, 5, 10, 19, 29, 31, 38, 58, 62, 95, 127, 145, 155, 190, 254, 290, 310, 551, 589, 635, 899, 1102, 1178, 1270, 1798, 2413, 2755, 2945, 3683, 3937, 4495, 4826, 5510, 5890, 7366, 7874, 8990, 12065, 17081, 18415, 19685, 24130, 34162, 36830, 39370, 69977, 74803, 85405, 114173, 139954, 149606, 170810, 228346, 349885, 374015, 570865, 699770, 748030, 1141730, 2169287, 4338574, 10846435, 21692870]

約数ペア:

[(1, 21692870), (2, 10846435), (5, 4338574), (10, 2169287), (19, 1141730), (29, 748030), (31, 699770), (38, 570865), (58, 374015), (62, 349885), (95, 228346), (127, 170810), (145, 149606), (155, 139954), (190, 114173), (254, 85405), (290, 74803), (310, 69977), (551, 39370), (589, 36830), (635, 34162), (899, 24130), (1102, 19685), (1178, 18415), (1270, 17081), (1798, 12065), (2413, 8990), (2755, 7874), (2945, 7366), (3683, 5890), (3937, 5510), (4495, 4826)]