278375580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{220933}}^1$

素因数の和:220955

約数の個数: 72

約数和(自身を含む): 965039712

約数和(自身を除く): 686664132

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 220933, 441866, 662799, 883732, 1104665, 1325598, 1546531, 1988397, 2209330, 2651196, 3093062, 3313995, 3976794, 4418660, 4639593, 6186124, 6627990, 7732655, 7953588, 9279186, 9941985, 13255980, 13918779, 15465310, 18558372, 19883970, 23197965, 27837558, 30930620, 39767940, 46395930, 55675116, 69593895, 92791860, 139187790, 278375580]

約数ペア:

[(1, 278375580), (2, 139187790), (3, 92791860), (4, 69593895), (5, 55675116), (6, 46395930), (7, 39767940), (9, 30930620), (10, 27837558), (12, 23197965), (14, 19883970), (15, 18558372), (18, 15465310), (20, 13918779), (21, 13255980), (28, 9941985), (30, 9279186), (35, 7953588), (36, 7732655), (42, 6627990), (45, 6186124), (60, 4639593), (63, 4418660), (70, 3976794), (84, 3313995), (90, 3093062), (105, 2651196), (126, 2209330), (140, 1988397), (180, 1546531), (210, 1325598), (252, 1104665), (315, 883732), (420, 662799), (630, 441866), (1260, 220933)]