18736760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1097}}^1$

素因数の和:1176

約数の個数: 64

約数和(自身を含む): 49014720

約数和(自身を除く): 30277960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1097, 1220, 1708, 2135, 2194, 2440, 3416, 4270, 4388, 5485, 7679, 8540, 8776, 10970, 15358, 17080, 21940, 30716, 38395, 43880, 61432, 66917, 76790, 133834, 153580, 267668, 307160, 334585, 468419, 535336, 669170, 936838, 1338340, 1873676, 2342095, 2676680, 3747352, 4684190, 9368380, 18736760]

約数ペア:

[(1, 18736760), (2, 9368380), (4, 4684190), (5, 3747352), (7, 2676680), (8, 2342095), (10, 1873676), (14, 1338340), (20, 936838), (28, 669170), (35, 535336), (40, 468419), (56, 334585), (61, 307160), (70, 267668), (122, 153580), (140, 133834), (244, 76790), (280, 66917), (305, 61432), (427, 43880), (488, 38395), (610, 30716), (854, 21940), (1097, 17080), (1220, 15358), (1708, 10970), (2135, 8776), (2194, 8540), (2440, 7679), (3416, 5485), (4270, 4388)]