20343981340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{607}}^1\times {\mathrm{991}}^1$

素因数の和:1715

約数の個数: 96

約数和(自身を含む): 45597081600

約数和(自身を除く): 25253100260

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 607, 890, 991, 1214, 1691, 1780, 1982, 2428, 3035, 3382, 3964, 4955, 6070, 6764, 8455, 9910, 11533, 12140, 16910, 18829, 19820, 23066, 33820, 37658, 46132, 54023, 57665, 75316, 88199, 94145, 108046, 115330, 176398, 188290, 216092, 230660, 270115, 352796, 376580, 440995, 540230, 601537, 881990, 1026437, 1080460, 1203074, 1675781, 1763980, 2052874, 2406148, 3007685, 3351562, 4105748, 5132185, 6015370, 6703124, 8378905, 10264370, 11429203, 12030740, 16757810, 20528740, 22858406, 33515620, 45716812, 53536793, 57146015, 107073586, 114292030, 214147172, 228584060, 267683965, 535367930, 1017199067, 1070735860, 2034398134, 4068796268, 5085995335, 10171990670, 20343981340]

約数ペア:

[(1, 20343981340), (2, 10171990670), (4, 5085995335), (5, 4068796268), (10, 2034398134), (19, 1070735860), (20, 1017199067), (38, 535367930), (76, 267683965), (89, 228584060), (95, 214147172), (178, 114292030), (190, 107073586), (356, 57146015), (380, 53536793), (445, 45716812), (607, 33515620), (890, 22858406), (991, 20528740), (1214, 16757810), (1691, 12030740), (1780, 11429203), (1982, 10264370), (2428, 8378905), (3035, 6703124), (3382, 6015370), (3964, 5132185), (4955, 4105748), (6070, 3351562), (6764, 3007685), (8455, 2406148), (9910, 2052874), (11533, 1763980), (12140, 1675781), (16910, 1203074), (18829, 1080460), (19820, 1026437), (23066, 881990), (33820, 601537), (37658, 540230), (46132, 440995), (54023, 376580), (57665, 352796), (75316, 270115), (88199, 230660), (94145, 216092), (108046, 188290), (115330, 176398)]