388845040

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{373}}^1$

素因数の和:626

約数の個数: 80

約数和(自身を含む): 923253408

約数和(自身を除く): 534408368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 157, 166, 314, 332, 373, 415, 628, 664, 746, 785, 830, 1256, 1328, 1492, 1570, 1660, 1865, 2512, 2984, 3140, 3320, 3730, 5968, 6280, 6640, 7460, 12560, 13031, 14920, 26062, 29840, 30959, 52124, 58561, 61918, 65155, 104248, 117122, 123836, 130310, 154795, 208496, 234244, 247672, 260620, 292805, 309590, 468488, 495344, 521240, 585610, 619180, 936976, 1042480, 1171220, 1238360, 2342440, 2476720, 4684880, 4860563, 9721126, 19442252, 24302815, 38884504, 48605630, 77769008, 97211260, 194422520, 388845040]

約数ペア:

[(1, 388845040), (2, 194422520), (4, 97211260), (5, 77769008), (8, 48605630), (10, 38884504), (16, 24302815), (20, 19442252), (40, 9721126), (80, 4860563), (83, 4684880), (157, 2476720), (166, 2342440), (314, 1238360), (332, 1171220), (373, 1042480), (415, 936976), (628, 619180), (664, 585610), (746, 521240), (785, 495344), (830, 468488), (1256, 309590), (1328, 292805), (1492, 260620), (1570, 247672), (1660, 234244), (1865, 208496), (2512, 154795), (2984, 130310), (3140, 123836), (3320, 117122), (3730, 104248), (5968, 65155), (6280, 61918), (6640, 58561), (7460, 52124), (12560, 30959), (13031, 29840), (14920, 26062)]