639883980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{6571}}^1$

素因数の和:7127

約数の個数: 72

約数和(自身を含む): 1944865104

約数和(自身を除く): 1304981124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 541, 1082, 1623, 2164, 2705, 3246, 4869, 5410, 6492, 6571, 8115, 9738, 10820, 13142, 16230, 19476, 19713, 24345, 26284, 32460, 32855, 39426, 48690, 59139, 65710, 78852, 97380, 98565, 118278, 131420, 197130, 236556, 295695, 394260, 591390, 1182780, 3554911, 7109822, 10664733, 14219644, 17774555, 21329466, 31994199, 35549110, 42658932, 53323665, 63988398, 71098220, 106647330, 127976796, 159970995, 213294660, 319941990, 639883980]

約数ペア:

[(1, 639883980), (2, 319941990), (3, 213294660), (4, 159970995), (5, 127976796), (6, 106647330), (9, 71098220), (10, 63988398), (12, 53323665), (15, 42658932), (18, 35549110), (20, 31994199), (30, 21329466), (36, 17774555), (45, 14219644), (60, 10664733), (90, 7109822), (180, 3554911), (541, 1182780), (1082, 591390), (1623, 394260), (2164, 295695), (2705, 236556), (3246, 197130), (4869, 131420), (5410, 118278), (6492, 98565), (6571, 97380), (8115, 78852), (9738, 65710), (10820, 59139), (13142, 48690), (16230, 39426), (19476, 32855), (19713, 32460), (24345, 26284)]