19979648

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{12007}}^1$

素因数の和:12034

約数の個数: 32

約数和(自身を含む): 42868560

約数和(自身を除く): 22888912

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 12007, 24014, 48028, 96056, 156091, 192112, 312182, 384224, 624364, 768448, 1248728, 1536896, 2497456, 4994912, 9989824, 19979648]

約数ペア:

[(1, 19979648), (2, 9989824), (4, 4994912), (8, 2497456), (13, 1536896), (16, 1248728), (26, 768448), (32, 624364), (52, 384224), (64, 312182), (104, 192112), (128, 156091), (208, 96056), (416, 48028), (832, 24014), (1664, 12007)]