20007979184

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{859}}^1\times {\mathrm{4507}}^1$

素因数の和:5410

約数の個数: 80

約数和(自身を含む): 43265980800

約数和(自身を除く): 23258001616

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 859, 1292, 1718, 2584, 3436, 4507, 5168, 6872, 9014, 13744, 14603, 16321, 18028, 29206, 32642, 36056, 58412, 65284, 72112, 76619, 85633, 116824, 130568, 153238, 171266, 233648, 261136, 277457, 306476, 342532, 554914, 612952, 685064, 1109828, 1225904, 1370128, 1455761, 2219656, 2911522, 3871513, 4439312, 5823044, 7743026, 11646088, 15486052, 23292176, 30972104, 61944208, 65815721, 73558747, 131631442, 147117494, 263262884, 294234988, 526525768, 588469976, 1053051536, 1176939952, 1250498699, 2500997398, 5001994796, 10003989592, 20007979184]

約数ペア:

[(1, 20007979184), (2, 10003989592), (4, 5001994796), (8, 2500997398), (16, 1250498699), (17, 1176939952), (19, 1053051536), (34, 588469976), (38, 526525768), (68, 294234988), (76, 263262884), (136, 147117494), (152, 131631442), (272, 73558747), (304, 65815721), (323, 61944208), (646, 30972104), (859, 23292176), (1292, 15486052), (1718, 11646088), (2584, 7743026), (3436, 5823044), (4507, 4439312), (5168, 3871513), (6872, 2911522), (9014, 2219656), (13744, 1455761), (14603, 1370128), (16321, 1225904), (18028, 1109828), (29206, 685064), (32642, 612952), (36056, 554914), (58412, 342532), (65284, 306476), (72112, 277457), (76619, 261136), (85633, 233648), (116824, 171266), (130568, 153238)]