21190130

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{373}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 45239040

約数和(自身を除く): 24048910

約数列:

[1, 2, 5, 10, 13, 19, 23, 26, 38, 46, 65, 95, 115, 130, 190, 230, 247, 299, 373, 437, 494, 598, 746, 874, 1235, 1495, 1865, 2185, 2470, 2990, 3730, 4370, 4849, 5681, 7087, 8579, 9698, 11362, 14174, 17158, 24245, 28405, 35435, 42895, 48490, 56810, 70870, 85790, 92131, 111527, 163001, 184262, 223054, 326002, 460655, 557635, 815005, 921310, 1115270, 1630010, 2119013, 4238026, 10595065, 21190130]

約数ペア:

[(1, 21190130), (2, 10595065), (5, 4238026), (10, 2119013), (13, 1630010), (19, 1115270), (23, 921310), (26, 815005), (38, 557635), (46, 460655), (65, 326002), (95, 223054), (115, 184262), (130, 163001), (190, 111527), (230, 92131), (247, 85790), (299, 70870), (373, 56810), (437, 48490), (494, 42895), (598, 35435), (746, 28405), (874, 24245), (1235, 17158), (1495, 14174), (1865, 11362), (2185, 9698), (2470, 8579), (2990, 7087), (3730, 5681), (4370, 4849)]