16821280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{653}}^1$

素因数の和:698

約数の個数: 96

約数和(自身を含む): 47464704

約数和(自身を除く): 30643424

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 653, 736, 805, 920, 1120, 1288, 1306, 1610, 1840, 2576, 2612, 3220, 3265, 3680, 4571, 5152, 5224, 6440, 6530, 9142, 10448, 12880, 13060, 15019, 18284, 20896, 22855, 25760, 26120, 30038, 36568, 45710, 52240, 60076, 73136, 75095, 91420, 104480, 105133, 120152, 146272, 150190, 182840, 210266, 240304, 300380, 365680, 420532, 480608, 525665, 600760, 731360, 841064, 1051330, 1201520, 1682128, 2102660, 2403040, 3364256, 4205320, 8410640, 16821280]

約数ペア:

[(1, 16821280), (2, 8410640), (4, 4205320), (5, 3364256), (7, 2403040), (8, 2102660), (10, 1682128), (14, 1201520), (16, 1051330), (20, 841064), (23, 731360), (28, 600760), (32, 525665), (35, 480608), (40, 420532), (46, 365680), (56, 300380), (70, 240304), (80, 210266), (92, 182840), (112, 150190), (115, 146272), (140, 120152), (160, 105133), (161, 104480), (184, 91420), (224, 75095), (230, 73136), (280, 60076), (322, 52240), (368, 45710), (460, 36568), (560, 30038), (644, 26120), (653, 25760), (736, 22855), (805, 20896), (920, 18284), (1120, 15019), (1288, 13060), (1306, 12880), (1610, 10448), (1840, 9142), (2576, 6530), (2612, 6440), (3220, 5224), (3265, 5152), (3680, 4571)]