78401988

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{421}}^1\times {\mathrm{739}}^1$

素因数の和:1177

約数の個数: 72

約数和(自身を含む): 227339840

約数和(自身を除く): 148937852

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 421, 739, 842, 1263, 1478, 1684, 2217, 2526, 2947, 2956, 3789, 4434, 5052, 5173, 5894, 6651, 7578, 8841, 8868, 10346, 11788, 13302, 15156, 15519, 17682, 20692, 26523, 26604, 31038, 35364, 46557, 53046, 62076, 93114, 106092, 186228, 311119, 622238, 933357, 1244476, 1866714, 2177833, 2800071, 3733428, 4355666, 5600142, 6533499, 8711332, 11200284, 13066998, 19600497, 26133996, 39200994, 78401988]

約数ペア:

[(1, 78401988), (2, 39200994), (3, 26133996), (4, 19600497), (6, 13066998), (7, 11200284), (9, 8711332), (12, 6533499), (14, 5600142), (18, 4355666), (21, 3733428), (28, 2800071), (36, 2177833), (42, 1866714), (63, 1244476), (84, 933357), (126, 622238), (252, 311119), (421, 186228), (739, 106092), (842, 93114), (1263, 62076), (1478, 53046), (1684, 46557), (2217, 35364), (2526, 31038), (2947, 26604), (2956, 26523), (3789, 20692), (4434, 17682), (5052, 15519), (5173, 15156), (5894, 13302), (6651, 11788), (7578, 10346), (8841, 8868)]