178157980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{809}}^1$

素因数の和:860

約数の個数: 144

約数和(自身を含む): 506761920

約数和(自身を除く): 328603940

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 121, 130, 140, 143, 154, 182, 220, 242, 260, 286, 308, 364, 385, 455, 484, 572, 605, 715, 770, 809, 847, 910, 1001, 1210, 1430, 1540, 1573, 1618, 1694, 1820, 2002, 2420, 2860, 3146, 3236, 3388, 4004, 4045, 4235, 5005, 5663, 6292, 7865, 8090, 8470, 8899, 10010, 10517, 11011, 11326, 15730, 16180, 16940, 17798, 20020, 21034, 22022, 22652, 28315, 31460, 35596, 42068, 44044, 44495, 52585, 55055, 56630, 62293, 73619, 88990, 97889, 105170, 110110, 113260, 115687, 124586, 147238, 177980, 195778, 210340, 220220, 231374, 249172, 294476, 311465, 368095, 391556, 462748, 489445, 578435, 622930, 685223, 736190, 809809, 978890, 1156870, 1245860, 1272557, 1370446, 1472380, 1619618, 1957780, 2313740, 2545114, 2740892, 3239236, 3426115, 4049045, 5090228, 6362785, 6852230, 8098090, 8907899, 12725570, 13704460, 16196180, 17815798, 25451140, 35631596, 44539495, 89078990, 178157980]

約数ペア:

[(1, 178157980), (2, 89078990), (4, 44539495), (5, 35631596), (7, 25451140), (10, 17815798), (11, 16196180), (13, 13704460), (14, 12725570), (20, 8907899), (22, 8098090), (26, 6852230), (28, 6362785), (35, 5090228), (44, 4049045), (52, 3426115), (55, 3239236), (65, 2740892), (70, 2545114), (77, 2313740), (91, 1957780), (110, 1619618), (121, 1472380), (130, 1370446), (140, 1272557), (143, 1245860), (154, 1156870), (182, 978890), (220, 809809), (242, 736190), (260, 685223), (286, 622930), (308, 578435), (364, 489445), (385, 462748), (455, 391556), (484, 368095), (572, 311465), (605, 294476), (715, 249172), (770, 231374), (809, 220220), (847, 210340), (910, 195778), (1001, 177980), (1210, 147238), (1430, 124586), (1540, 115687), (1573, 113260), (1618, 110110), (1694, 105170), (1820, 97889), (2002, 88990), (2420, 73619), (2860, 62293), (3146, 56630), (3236, 55055), (3388, 52585), (4004, 44495), (4045, 44044), (4235, 42068), (5005, 35596), (5663, 31460), (6292, 28315), (7865, 22652), (8090, 22022), (8470, 21034), (8899, 20020), (10010, 17798), (10517, 16940), (11011, 16180), (11326, 15730)]