638420144

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{4013}}^1$

素因数の和:4245

約数の個数: 40

約数和(自身を含む): 1265244912

約数和(自身を除く): 626824768

約数列:

[1, 2, 4, 8, 16, 61, 122, 163, 244, 326, 488, 652, 976, 1304, 2608, 4013, 8026, 9943, 16052, 19886, 32104, 39772, 64208, 79544, 159088, 244793, 489586, 654119, 979172, 1308238, 1958344, 2616476, 3916688, 5232952, 10465904, 39901259, 79802518, 159605036, 319210072, 638420144]

約数ペア:

[(1, 638420144), (2, 319210072), (4, 159605036), (8, 79802518), (16, 39901259), (61, 10465904), (122, 5232952), (163, 3916688), (244, 2616476), (326, 1958344), (488, 1308238), (652, 979172), (976, 654119), (1304, 489586), (2608, 244793), (4013, 159088), (8026, 79544), (9943, 64208), (16052, 39772), (19886, 32104)]