641589720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1\times {\mathrm{641}}^1$

素因数の和:1113

約数の個数: 128

約数和(自身を含む): 2033856000

約数和(自身を除く): 1392266280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 190, 228, 285, 380, 439, 456, 570, 641, 760, 878, 1140, 1282, 1317, 1756, 1923, 2195, 2280, 2564, 2634, 3205, 3512, 3846, 4390, 5128, 5268, 6410, 6585, 7692, 8341, 8780, 9615, 10536, 12179, 12820, 13170, 15384, 16682, 17560, 19230, 24358, 25023, 25640, 26340, 33364, 36537, 38460, 41705, 48716, 50046, 52680, 60895, 66728, 73074, 76920, 83410, 97432, 100092, 121790, 125115, 146148, 166820, 182685, 200184, 243580, 250230, 281399, 292296, 333640, 365370, 487160, 500460, 562798, 730740, 844197, 1000920, 1125596, 1406995, 1461480, 1688394, 2251192, 2813990, 3376788, 4220985, 5346581, 5627980, 6753576, 8441970, 10693162, 11255960, 16039743, 16883940, 21386324, 26732905, 32079486, 33767880, 42772648, 53465810, 64158972, 80198715, 106931620, 128317944, 160397430, 213863240, 320794860, 641589720]

約数ペア:

[(1, 641589720), (2, 320794860), (3, 213863240), (4, 160397430), (5, 128317944), (6, 106931620), (8, 80198715), (10, 64158972), (12, 53465810), (15, 42772648), (19, 33767880), (20, 32079486), (24, 26732905), (30, 21386324), (38, 16883940), (40, 16039743), (57, 11255960), (60, 10693162), (76, 8441970), (95, 6753576), (114, 5627980), (120, 5346581), (152, 4220985), (190, 3376788), (228, 2813990), (285, 2251192), (380, 1688394), (439, 1461480), (456, 1406995), (570, 1125596), (641, 1000920), (760, 844197), (878, 730740), (1140, 562798), (1282, 500460), (1317, 487160), (1756, 365370), (1923, 333640), (2195, 292296), (2280, 281399), (2564, 250230), (2634, 243580), (3205, 200184), (3512, 182685), (3846, 166820), (4390, 146148), (5128, 125115), (5268, 121790), (6410, 100092), (6585, 97432), (7692, 83410), (8341, 76920), (8780, 73074), (9615, 66728), (10536, 60895), (12179, 52680), (12820, 50046), (13170, 48716), (15384, 41705), (16682, 38460), (17560, 36537), (19230, 33364), (24358, 26340), (25023, 25640)]