19987786

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{541}}^1$

素因数の和:599

約数の個数: 48

約数和(自身を含む): 38926440

約数和(自身を除く): 18938654

約数列:

[1, 2, 7, 13, 14, 26, 29, 49, 58, 91, 98, 182, 203, 377, 406, 541, 637, 754, 1082, 1274, 1421, 2639, 2842, 3787, 5278, 7033, 7574, 14066, 15689, 18473, 26509, 31378, 36946, 49231, 53018, 98462, 109823, 203957, 219646, 344617, 407914, 689234, 768761, 1427699, 1537522, 2855398, 9993893, 19987786]

約数ペア:

[(1, 19987786), (2, 9993893), (7, 2855398), (13, 1537522), (14, 1427699), (26, 768761), (29, 689234), (49, 407914), (58, 344617), (91, 219646), (98, 203957), (182, 109823), (203, 98462), (377, 53018), (406, 49231), (541, 36946), (637, 31378), (754, 26509), (1082, 18473), (1274, 15689), (1421, 14066), (2639, 7574), (2842, 7033), (3787, 5278)]