81018736

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:362

約数の個数: 80

約数和(自身を含む): 178515360

約数和(自身を除く): 97496624

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 61, 68, 76, 122, 136, 152, 244, 257, 272, 304, 323, 488, 514, 646, 976, 1028, 1037, 1159, 1292, 2056, 2074, 2318, 2584, 4112, 4148, 4369, 4636, 4883, 5168, 8296, 8738, 9272, 9766, 15677, 16592, 17476, 18544, 19532, 19703, 31354, 34952, 39064, 39406, 62708, 69904, 78128, 78812, 83011, 125416, 157624, 166022, 250832, 266509, 297863, 315248, 332044, 533018, 595726, 664088, 1066036, 1191452, 1328176, 2132072, 2382904, 4264144, 4765808, 5063671, 10127342, 20254684, 40509368, 81018736]

約数ペア:

[(1, 81018736), (2, 40509368), (4, 20254684), (8, 10127342), (16, 5063671), (17, 4765808), (19, 4264144), (34, 2382904), (38, 2132072), (61, 1328176), (68, 1191452), (76, 1066036), (122, 664088), (136, 595726), (152, 533018), (244, 332044), (257, 315248), (272, 297863), (304, 266509), (323, 250832), (488, 166022), (514, 157624), (646, 125416), (976, 83011), (1028, 78812), (1037, 78128), (1159, 69904), (1292, 62708), (2056, 39406), (2074, 39064), (2318, 34952), (2584, 31354), (4112, 19703), (4148, 19532), (4369, 18544), (4636, 17476), (4883, 16592), (5168, 15677), (8296, 9766), (8738, 9272)]