19881654

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^2$

素因数の和:221

約数の個数: 48

約数和(自身を含む): 44515632

約数和(自身を除く): 24633978

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 74, 78, 83, 111, 166, 222, 249, 481, 498, 962, 1079, 1443, 2158, 2886, 3071, 3237, 6142, 6474, 6889, 9213, 13778, 18426, 20667, 39923, 41334, 79846, 89557, 119769, 179114, 239538, 254893, 268671, 509786, 537342, 764679, 1529358, 3313609, 6627218, 9940827, 19881654]

約数ペア:

[(1, 19881654), (2, 9940827), (3, 6627218), (6, 3313609), (13, 1529358), (26, 764679), (37, 537342), (39, 509786), (74, 268671), (78, 254893), (83, 239538), (111, 179114), (166, 119769), (222, 89557), (249, 79846), (481, 41334), (498, 39923), (962, 20667), (1079, 18426), (1443, 13778), (2158, 9213), (2886, 6889), (3071, 6474), (3237, 6142)]