19809284

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 40715136

約数和(自身を除く): 20905852

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 71, 142, 187, 284, 373, 374, 746, 748, 781, 1207, 1492, 1562, 2414, 3124, 4103, 4828, 6341, 8206, 12682, 13277, 16412, 25364, 26483, 26554, 52966, 53108, 69751, 105932, 139502, 279004, 291313, 450211, 582626, 900422, 1165252, 1800844, 4952321, 9904642, 19809284]

約数ペア:

[(1, 19809284), (2, 9904642), (4, 4952321), (11, 1800844), (17, 1165252), (22, 900422), (34, 582626), (44, 450211), (68, 291313), (71, 279004), (142, 139502), (187, 105932), (284, 69751), (373, 53108), (374, 52966), (746, 26554), (748, 26483), (781, 25364), (1207, 16412), (1492, 13277), (1562, 12682), (2414, 8206), (3124, 6341), (4103, 4828)]