20624640

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:196

約数の個数: 144

約数和(自身を含む): 67991616

約数和(自身を除く): 47366976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 41, 48, 60, 64, 80, 82, 96, 120, 123, 128, 131, 160, 164, 192, 205, 240, 246, 256, 262, 320, 328, 384, 393, 410, 480, 492, 524, 615, 640, 655, 656, 768, 786, 820, 960, 984, 1048, 1230, 1280, 1310, 1312, 1572, 1640, 1920, 1965, 1968, 2096, 2460, 2620, 2624, 3144, 3280, 3840, 3930, 3936, 4192, 4920, 5240, 5248, 5371, 6288, 6560, 7860, 7872, 8384, 9840, 10480, 10496, 10742, 12576, 13120, 15720, 15744, 16113, 16768, 19680, 20960, 21484, 25152, 26240, 26855, 31440, 31488, 32226, 33536, 39360, 41920, 42968, 50304, 52480, 53710, 62880, 64452, 78720, 80565, 83840, 85936, 100608, 107420, 125760, 128904, 157440, 161130, 167680, 171872, 214840, 251520, 257808, 322260, 343744, 429680, 503040, 515616, 644520, 687488, 859360, 1031232, 1289040, 1374976, 1718720, 2062464, 2578080, 3437440, 4124928, 5156160, 6874880, 10312320, 20624640]

約数ペア:

[(1, 20624640), (2, 10312320), (3, 6874880), (4, 5156160), (5, 4124928), (6, 3437440), (8, 2578080), (10, 2062464), (12, 1718720), (15, 1374976), (16, 1289040), (20, 1031232), (24, 859360), (30, 687488), (32, 644520), (40, 515616), (41, 503040), (48, 429680), (60, 343744), (64, 322260), (80, 257808), (82, 251520), (96, 214840), (120, 171872), (123, 167680), (128, 161130), (131, 157440), (160, 128904), (164, 125760), (192, 107420), (205, 100608), (240, 85936), (246, 83840), (256, 80565), (262, 78720), (320, 64452), (328, 62880), (384, 53710), (393, 52480), (410, 50304), (480, 42968), (492, 41920), (524, 39360), (615, 33536), (640, 32226), (655, 31488), (656, 31440), (768, 26855), (786, 26240), (820, 25152), (960, 21484), (984, 20960), (1048, 19680), (1230, 16768), (1280, 16113), (1310, 15744), (1312, 15720), (1572, 13120), (1640, 12576), (1920, 10742), (1965, 10496), (1968, 10480), (2096, 9840), (2460, 8384), (2620, 7872), (2624, 7860), (3144, 6560), (3280, 6288), (3840, 5371), (3930, 5248), (3936, 5240), (4192, 4920)]