20987278324

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{19763}}^1$

素因数の和:20032

約数の個数: 48

約数和(自身を含む): 39346171200

約数和(自身を除く): 18358892876

約数列:

[1, 2, 4, 19, 38, 76, 89, 157, 178, 314, 356, 628, 1691, 2983, 3382, 5966, 6764, 11932, 13973, 19763, 27946, 39526, 55892, 79052, 265487, 375497, 530974, 750994, 1061948, 1501988, 1758907, 3102791, 3517814, 6205582, 7035628, 12411164, 33419233, 58953029, 66838466, 117906058, 133676932, 235812116, 276148399, 552296798, 1104593596, 5246819581, 10493639162, 20987278324]

約数ペア:

[(1, 20987278324), (2, 10493639162), (4, 5246819581), (19, 1104593596), (38, 552296798), (76, 276148399), (89, 235812116), (157, 133676932), (178, 117906058), (314, 66838466), (356, 58953029), (628, 33419233), (1691, 12411164), (2983, 7035628), (3382, 6205582), (5966, 3517814), (6764, 3102791), (11932, 1758907), (13973, 1501988), (19763, 1061948), (27946, 750994), (39526, 530974), (55892, 375497), (79052, 265487)]