78778940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{547}}^1$

素因数の和:954

約数の個数: 48

約数和(自身を含む): 174921600

約数和(自身を除く): 96142660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 379, 380, 547, 758, 1094, 1516, 1895, 2188, 2735, 3790, 5470, 7201, 7580, 10393, 10940, 14402, 20786, 28804, 36005, 41572, 51965, 72010, 103930, 144020, 207313, 207860, 414626, 829252, 1036565, 2073130, 3938947, 4146260, 7877894, 15755788, 19694735, 39389470, 78778940]

約数ペア:

[(1, 78778940), (2, 39389470), (4, 19694735), (5, 15755788), (10, 7877894), (19, 4146260), (20, 3938947), (38, 2073130), (76, 1036565), (95, 829252), (190, 414626), (379, 207860), (380, 207313), (547, 144020), (758, 103930), (1094, 72010), (1516, 51965), (1895, 41572), (2188, 36005), (2735, 28804), (3790, 20786), (5470, 14402), (7201, 10940), (7580, 10393)]