30815720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3119}}^1$

素因数の和:3162

約数の個数: 64

約数和(自身を含む): 78624000

約数和(自身を除く): 47808280

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 3119, 4940, 6238, 9880, 12476, 15595, 24952, 31190, 40547, 59261, 62380, 81094, 118522, 124760, 162188, 202735, 237044, 296305, 324376, 405470, 474088, 592610, 770393, 810940, 1185220, 1540786, 1621880, 2370440, 3081572, 3851965, 6163144, 7703930, 15407860, 30815720]

約数ペア:

[(1, 30815720), (2, 15407860), (4, 7703930), (5, 6163144), (8, 3851965), (10, 3081572), (13, 2370440), (19, 1621880), (20, 1540786), (26, 1185220), (38, 810940), (40, 770393), (52, 592610), (65, 474088), (76, 405470), (95, 324376), (104, 296305), (130, 237044), (152, 202735), (190, 162188), (247, 124760), (260, 118522), (380, 81094), (494, 62380), (520, 59261), (760, 40547), (988, 31190), (1235, 24952), (1976, 15595), (2470, 12476), (3119, 9880), (4940, 6238)]