161217980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:376

約数の個数: 144

約数和(自身を含む): 440444928

約数和(自身を除く): 279226948

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 55, 62, 70, 77, 110, 121, 124, 140, 154, 155, 217, 220, 242, 307, 308, 310, 341, 385, 434, 484, 605, 614, 620, 682, 770, 847, 868, 1085, 1210, 1228, 1364, 1535, 1540, 1694, 1705, 2149, 2170, 2387, 2420, 3070, 3377, 3388, 3410, 3751, 4235, 4298, 4340, 4774, 6140, 6754, 6820, 7502, 8470, 8596, 9517, 9548, 10745, 11935, 13508, 15004, 16885, 16940, 18755, 19034, 21490, 23639, 23870, 26257, 33770, 37147, 37510, 38068, 42980, 47278, 47585, 47740, 52514, 66619, 67540, 74294, 75020, 94556, 95170, 104687, 105028, 118195, 131285, 133238, 148588, 185735, 190340, 209374, 236390, 260029, 262570, 266476, 333095, 371470, 418748, 472780, 520058, 523435, 525140, 666190, 732809, 742940, 1040116, 1046870, 1151557, 1300145, 1332380, 1465618, 2093740, 2303114, 2600290, 2931236, 3664045, 4606228, 5200580, 5757785, 7328090, 8060899, 11515570, 14656180, 16121798, 23031140, 32243596, 40304495, 80608990, 161217980]

約数ペア:

[(1, 161217980), (2, 80608990), (4, 40304495), (5, 32243596), (7, 23031140), (10, 16121798), (11, 14656180), (14, 11515570), (20, 8060899), (22, 7328090), (28, 5757785), (31, 5200580), (35, 4606228), (44, 3664045), (55, 2931236), (62, 2600290), (70, 2303114), (77, 2093740), (110, 1465618), (121, 1332380), (124, 1300145), (140, 1151557), (154, 1046870), (155, 1040116), (217, 742940), (220, 732809), (242, 666190), (307, 525140), (308, 523435), (310, 520058), (341, 472780), (385, 418748), (434, 371470), (484, 333095), (605, 266476), (614, 262570), (620, 260029), (682, 236390), (770, 209374), (847, 190340), (868, 185735), (1085, 148588), (1210, 133238), (1228, 131285), (1364, 118195), (1535, 105028), (1540, 104687), (1694, 95170), (1705, 94556), (2149, 75020), (2170, 74294), (2387, 67540), (2420, 66619), (3070, 52514), (3377, 47740), (3388, 47585), (3410, 47278), (3751, 42980), (4235, 38068), (4298, 37510), (4340, 37147), (4774, 33770), (6140, 26257), (6754, 23870), (6820, 23639), (7502, 21490), (8470, 19034), (8596, 18755), (9517, 16940), (9548, 16885), (10745, 15004), (11935, 13508)]