20819890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:331

約数の個数: 64

約数和(自身を含む): 46738944

約数和(自身を除く): 25919054

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 137, 167, 182, 274, 334, 455, 685, 835, 910, 959, 1169, 1370, 1670, 1781, 1918, 2171, 2338, 3562, 4342, 4795, 5845, 8905, 9590, 10855, 11690, 12467, 15197, 17810, 21710, 22879, 24934, 30394, 45758, 62335, 75985, 114395, 124670, 151970, 160153, 228790, 297427, 320306, 594854, 800765, 1487135, 1601530, 2081989, 2974270, 4163978, 10409945, 20819890]

約数ペア:

[(1, 20819890), (2, 10409945), (5, 4163978), (7, 2974270), (10, 2081989), (13, 1601530), (14, 1487135), (26, 800765), (35, 594854), (65, 320306), (70, 297427), (91, 228790), (130, 160153), (137, 151970), (167, 124670), (182, 114395), (274, 75985), (334, 62335), (455, 45758), (685, 30394), (835, 24934), (910, 22879), (959, 21710), (1169, 17810), (1370, 15197), (1670, 12467), (1781, 11690), (1918, 10855), (2171, 9590), (2338, 8905), (3562, 5845), (4342, 4795)]