168980420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{269}}^1\times {\mathrm{641}}^1$

素因数の和:933

約数の個数: 72

約数和(自身を含む): 414975960

約数和(自身を除く): 245995540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 269, 490, 538, 641, 980, 1076, 1282, 1345, 1883, 2564, 2690, 3205, 3766, 4487, 5380, 6410, 7532, 8974, 9415, 12820, 13181, 17948, 18830, 22435, 26362, 31409, 37660, 44870, 52724, 62818, 65905, 89740, 125636, 131810, 157045, 172429, 263620, 314090, 344858, 628180, 689716, 862145, 1207003, 1724290, 2414006, 3448580, 4828012, 6035015, 8449021, 12070030, 16898042, 24140060, 33796084, 42245105, 84490210, 168980420]

約数ペア:

[(1, 168980420), (2, 84490210), (4, 42245105), (5, 33796084), (7, 24140060), (10, 16898042), (14, 12070030), (20, 8449021), (28, 6035015), (35, 4828012), (49, 3448580), (70, 2414006), (98, 1724290), (140, 1207003), (196, 862145), (245, 689716), (269, 628180), (490, 344858), (538, 314090), (641, 263620), (980, 172429), (1076, 157045), (1282, 131810), (1345, 125636), (1883, 89740), (2564, 65905), (2690, 62818), (3205, 52724), (3766, 44870), (4487, 37660), (5380, 31409), (6410, 26362), (7532, 22435), (8974, 18830), (9415, 17948), (12820, 13181)]