28465040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:400

約数の個数: 80

約数和(自身を含む): 71037120

約数和(自身を除く): 42572080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 61, 76, 80, 95, 122, 152, 190, 244, 304, 305, 307, 380, 488, 610, 614, 760, 976, 1159, 1220, 1228, 1520, 1535, 2318, 2440, 2456, 3070, 4636, 4880, 4912, 5795, 5833, 6140, 9272, 11590, 11666, 12280, 18544, 18727, 23180, 23332, 24560, 29165, 37454, 46360, 46664, 58330, 74908, 92720, 93328, 93635, 116660, 149816, 187270, 233320, 299632, 355813, 374540, 466640, 711626, 749080, 1423252, 1498160, 1779065, 2846504, 3558130, 5693008, 7116260, 14232520, 28465040]

約数ペア:

[(1, 28465040), (2, 14232520), (4, 7116260), (5, 5693008), (8, 3558130), (10, 2846504), (16, 1779065), (19, 1498160), (20, 1423252), (38, 749080), (40, 711626), (61, 466640), (76, 374540), (80, 355813), (95, 299632), (122, 233320), (152, 187270), (190, 149816), (244, 116660), (304, 93635), (305, 93328), (307, 92720), (380, 74908), (488, 58330), (610, 46664), (614, 46360), (760, 37454), (976, 29165), (1159, 24560), (1220, 23332), (1228, 23180), (1520, 18727), (1535, 18544), (2318, 12280), (2440, 11666), (2456, 11590), (3070, 9272), (4636, 6140), (4880, 5833), (4912, 5795)]