20218871815

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:724

約数の個数: 64

約数和(自身を含む): 26289567360

約数和(自身を除く): 6070695545

約数列:

[1, 5, 37, 41, 61, 89, 185, 205, 305, 445, 491, 1517, 2257, 2455, 2501, 3293, 3649, 5429, 7585, 11285, 12505, 16465, 18167, 18245, 20131, 27145, 29951, 43699, 90835, 92537, 100655, 135013, 149755, 200873, 218495, 222589, 462685, 675065, 744847, 1004365, 1108187, 1112945, 1227991, 1616863, 1791659, 2665639, 3724235, 5540935, 6139955, 8084315, 8235793, 8958295, 13328195, 41178965, 45435667, 66291383, 98628643, 109291199, 227178335, 331456915, 493143215, 546455995, 4043774363, 20218871815]

約数ペア:

[(1, 20218871815), (5, 4043774363), (37, 546455995), (41, 493143215), (61, 331456915), (89, 227178335), (185, 109291199), (205, 98628643), (305, 66291383), (445, 45435667), (491, 41178965), (1517, 13328195), (2257, 8958295), (2455, 8235793), (2501, 8084315), (3293, 6139955), (3649, 5540935), (5429, 3724235), (7585, 2665639), (11285, 1791659), (12505, 1616863), (16465, 1227991), (18167, 1112945), (18245, 1108187), (20131, 1004365), (27145, 744847), (29951, 675065), (43699, 462685), (90835, 222589), (92537, 218495), (100655, 200873), (135013, 149755)]