42213915

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 77968800

約数和(自身を除く): 35754885

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 97, 171, 285, 291, 485, 509, 855, 873, 1455, 1527, 1843, 2545, 4365, 4581, 5529, 7635, 9215, 9671, 16587, 22905, 27645, 29013, 48355, 49373, 82935, 87039, 145065, 148119, 246865, 435195, 444357, 740595, 938087, 2221785, 2814261, 4690435, 8442783, 14071305, 42213915]

約数ペア:

[(1, 42213915), (3, 14071305), (5, 8442783), (9, 4690435), (15, 2814261), (19, 2221785), (45, 938087), (57, 740595), (95, 444357), (97, 435195), (171, 246865), (285, 148119), (291, 145065), (485, 87039), (509, 82935), (855, 49373), (873, 48355), (1455, 29013), (1527, 27645), (1843, 22905), (2545, 16587), (4365, 9671), (4581, 9215), (5529, 7635)]