1238996920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{19843}}^1$

素因数の和:20084

約数の個数: 64

約数和(自身を含む): 3200440320

約数和(自身を除く): 1961443400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 223, 280, 446, 892, 1115, 1561, 1784, 2230, 3122, 4460, 6244, 7805, 8920, 12488, 15610, 19843, 31220, 39686, 62440, 79372, 99215, 138901, 158744, 198430, 277802, 396860, 555604, 694505, 793720, 1111208, 1389010, 2778020, 4424989, 5556040, 8849978, 17699956, 22124945, 30974923, 35399912, 44249890, 61949846, 88499780, 123899692, 154874615, 176999560, 247799384, 309749230, 619498460, 1238996920]

約数ペア:

[(1, 1238996920), (2, 619498460), (4, 309749230), (5, 247799384), (7, 176999560), (8, 154874615), (10, 123899692), (14, 88499780), (20, 61949846), (28, 44249890), (35, 35399912), (40, 30974923), (56, 22124945), (70, 17699956), (140, 8849978), (223, 5556040), (280, 4424989), (446, 2778020), (892, 1389010), (1115, 1111208), (1561, 793720), (1784, 694505), (2230, 555604), (3122, 396860), (4460, 277802), (6244, 198430), (7805, 158744), (8920, 138901), (12488, 99215), (15610, 79372), (19843, 62440), (31220, 39686)]