21663978

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2377}}^1$

素因数の和:2427

約数の個数: 48

約数和(自身を含む): 52049664

約数和(自身を除く): 30385686

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 49, 62, 93, 98, 147, 186, 217, 294, 434, 651, 1302, 1519, 2377, 3038, 4557, 4754, 7131, 9114, 14262, 16639, 33278, 49917, 73687, 99834, 116473, 147374, 221061, 232946, 349419, 442122, 515809, 698838, 1031618, 1547427, 3094854, 3610663, 7221326, 10831989, 21663978]

約数ペア:

[(1, 21663978), (2, 10831989), (3, 7221326), (6, 3610663), (7, 3094854), (14, 1547427), (21, 1031618), (31, 698838), (42, 515809), (49, 442122), (62, 349419), (93, 232946), (98, 221061), (147, 147374), (186, 116473), (217, 99834), (294, 73687), (434, 49917), (651, 33278), (1302, 16639), (1519, 14262), (2377, 9114), (3038, 7131), (4557, 4754)]