18421390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 38247552

約数和(自身を除く): 19826162

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 61, 65, 101, 115, 122, 130, 202, 230, 299, 305, 505, 598, 610, 793, 1010, 1313, 1403, 1495, 1586, 2323, 2626, 2806, 2990, 3965, 4646, 6161, 6565, 7015, 7930, 11615, 12322, 13130, 14030, 18239, 23230, 30199, 30805, 36478, 60398, 61610, 80093, 91195, 141703, 150995, 160186, 182390, 283406, 301990, 400465, 708515, 800930, 1417030, 1842139, 3684278, 9210695, 18421390]

約数ペア:

[(1, 18421390), (2, 9210695), (5, 3684278), (10, 1842139), (13, 1417030), (23, 800930), (26, 708515), (46, 400465), (61, 301990), (65, 283406), (101, 182390), (115, 160186), (122, 150995), (130, 141703), (202, 91195), (230, 80093), (299, 61610), (305, 60398), (505, 36478), (598, 30805), (610, 30199), (793, 23230), (1010, 18239), (1313, 14030), (1403, 13130), (1495, 12322), (1586, 11615), (2323, 7930), (2626, 7015), (2806, 6565), (2990, 6161), (3965, 4646)]