16669840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1$

素因数の和:1040

約数の個数: 80

約数和(自身を含む): 44550720

約数和(自身を除く): 27880880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 997, 1045, 1520, 1672, 1994, 2090, 3344, 3988, 4180, 4985, 7976, 8360, 9970, 10967, 15952, 16720, 18943, 19940, 21934, 37886, 39880, 43868, 54835, 75772, 79760, 87736, 94715, 109670, 151544, 175472, 189430, 208373, 219340, 303088, 378860, 416746, 438680, 757720, 833492, 877360, 1041865, 1515440, 1666984, 2083730, 3333968, 4167460, 8334920, 16669840]

約数ペア:

[(1, 16669840), (2, 8334920), (4, 4167460), (5, 3333968), (8, 2083730), (10, 1666984), (11, 1515440), (16, 1041865), (19, 877360), (20, 833492), (22, 757720), (38, 438680), (40, 416746), (44, 378860), (55, 303088), (76, 219340), (80, 208373), (88, 189430), (95, 175472), (110, 151544), (152, 109670), (176, 94715), (190, 87736), (209, 79760), (220, 75772), (304, 54835), (380, 43868), (418, 39880), (440, 37886), (760, 21934), (836, 19940), (880, 18943), (997, 16720), (1045, 15952), (1520, 10967), (1672, 9970), (1994, 8360), (2090, 7976), (3344, 4985), (3988, 4180)]