20005627972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{811}}^1\times {\mathrm{1553}}^1$

素因数の和:2417

約数の個数: 72

約数和(自身を含む): 40384183392

約数和(自身を除く): 20378555420

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 209, 361, 418, 722, 811, 836, 1444, 1553, 1622, 3106, 3244, 3971, 6212, 7942, 8921, 15409, 15884, 17083, 17842, 29507, 30818, 34166, 35684, 59014, 61636, 68332, 118028, 169499, 292771, 324577, 338998, 560633, 585542, 649154, 677996, 1121266, 1171084, 1259483, 1298308, 2242532, 2518966, 3220481, 5037932, 6166963, 6440962, 12333926, 12881924, 13854313, 23930177, 24667852, 27708626, 47860354, 55417252, 95720708, 263231947, 454673363, 526463894, 909346726, 1052927788, 1818693452, 5001406993, 10002813986, 20005627972]

約数ペア:

[(1, 20005627972), (2, 10002813986), (4, 5001406993), (11, 1818693452), (19, 1052927788), (22, 909346726), (38, 526463894), (44, 454673363), (76, 263231947), (209, 95720708), (361, 55417252), (418, 47860354), (722, 27708626), (811, 24667852), (836, 23930177), (1444, 13854313), (1553, 12881924), (1622, 12333926), (3106, 6440962), (3244, 6166963), (3971, 5037932), (6212, 3220481), (7942, 2518966), (8921, 2242532), (15409, 1298308), (15884, 1259483), (17083, 1171084), (17842, 1121266), (29507, 677996), (30818, 649154), (34166, 585542), (35684, 560633), (59014, 338998), (61636, 324577), (68332, 292771), (118028, 169499)]