280722910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1277}}^1$

素因数の和:1405

約数の個数: 64

約数和(自身を含む): 579700800

約数和(自身を除く): 298977890

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 89, 95, 130, 178, 190, 247, 445, 494, 890, 1157, 1235, 1277, 1691, 2314, 2470, 2554, 3382, 5785, 6385, 8455, 11570, 12770, 16601, 16910, 21983, 24263, 33202, 43966, 48526, 83005, 109915, 113653, 121315, 166010, 219830, 227306, 242630, 315419, 568265, 630838, 1136530, 1477489, 1577095, 2159407, 2954978, 3154190, 4318814, 7387445, 10797035, 14774890, 21594070, 28072291, 56144582, 140361455, 280722910]

約数ペア:

[(1, 280722910), (2, 140361455), (5, 56144582), (10, 28072291), (13, 21594070), (19, 14774890), (26, 10797035), (38, 7387445), (65, 4318814), (89, 3154190), (95, 2954978), (130, 2159407), (178, 1577095), (190, 1477489), (247, 1136530), (445, 630838), (494, 568265), (890, 315419), (1157, 242630), (1235, 227306), (1277, 219830), (1691, 166010), (2314, 121315), (2470, 113653), (2554, 109915), (3382, 83005), (5785, 48526), (6385, 43966), (8455, 33202), (11570, 24263), (12770, 21983), (16601, 16910)]