642051230

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1787}}^1$

素因数の和:1905

約数の個数: 64

約数和(自身を含む): 1277061120

約数和(自身を除く): 635009890

約数列:

[1, 2, 5, 10, 19, 31, 38, 61, 62, 95, 122, 155, 190, 305, 310, 589, 610, 1159, 1178, 1787, 1891, 2318, 2945, 3574, 3782, 5795, 5890, 8935, 9455, 11590, 17870, 18910, 33953, 35929, 55397, 67906, 71858, 109007, 110794, 169765, 179645, 218014, 276985, 339530, 359290, 545035, 553970, 1052543, 1090070, 2071133, 2105086, 3379217, 4142266, 5262715, 6758434, 10355665, 10525430, 16896085, 20711330, 33792170, 64205123, 128410246, 321025615, 642051230]

約数ペア:

[(1, 642051230), (2, 321025615), (5, 128410246), (10, 64205123), (19, 33792170), (31, 20711330), (38, 16896085), (61, 10525430), (62, 10355665), (95, 6758434), (122, 5262715), (155, 4142266), (190, 3379217), (305, 2105086), (310, 2071133), (589, 1090070), (610, 1052543), (1159, 553970), (1178, 545035), (1787, 359290), (1891, 339530), (2318, 276985), (2945, 218014), (3574, 179645), (3782, 169765), (5795, 110794), (5890, 109007), (8935, 71858), (9455, 67906), (11590, 55397), (17870, 35929), (18910, 33953)]