28381440

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:432

約数の個数: 144

約数和(自身を含む): 95659200

約数和(自身を除く): 67277760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 228, 240, 256, 285, 304, 320, 380, 384, 389, 456, 480, 570, 608, 640, 760, 768, 778, 912, 960, 1140, 1167, 1216, 1280, 1520, 1556, 1824, 1920, 1945, 2280, 2334, 2432, 3040, 3112, 3648, 3840, 3890, 4560, 4668, 4864, 5835, 6080, 6224, 7296, 7391, 7780, 9120, 9336, 11670, 12160, 12448, 14592, 14782, 15560, 18240, 18672, 22173, 23340, 24320, 24896, 29564, 31120, 36480, 36955, 37344, 44346, 46680, 49792, 59128, 62240, 72960, 73910, 74688, 88692, 93360, 99584, 110865, 118256, 124480, 147820, 149376, 177384, 186720, 221730, 236512, 248960, 295640, 298752, 354768, 373440, 443460, 473024, 497920, 591280, 709536, 746880, 886920, 946048, 1182560, 1419072, 1493760, 1773840, 1892096, 2365120, 2838144, 3547680, 4730240, 5676288, 7095360, 9460480, 14190720, 28381440]

約数ペア:

[(1, 28381440), (2, 14190720), (3, 9460480), (4, 7095360), (5, 5676288), (6, 4730240), (8, 3547680), (10, 2838144), (12, 2365120), (15, 1892096), (16, 1773840), (19, 1493760), (20, 1419072), (24, 1182560), (30, 946048), (32, 886920), (38, 746880), (40, 709536), (48, 591280), (57, 497920), (60, 473024), (64, 443460), (76, 373440), (80, 354768), (95, 298752), (96, 295640), (114, 248960), (120, 236512), (128, 221730), (152, 186720), (160, 177384), (190, 149376), (192, 147820), (228, 124480), (240, 118256), (256, 110865), (285, 99584), (304, 93360), (320, 88692), (380, 74688), (384, 73910), (389, 72960), (456, 62240), (480, 59128), (570, 49792), (608, 46680), (640, 44346), (760, 37344), (768, 36955), (778, 36480), (912, 31120), (960, 29564), (1140, 24896), (1167, 24320), (1216, 23340), (1280, 22173), (1520, 18672), (1556, 18240), (1824, 15560), (1920, 14782), (1945, 14592), (2280, 12448), (2334, 12160), (2432, 11670), (3040, 9336), (3112, 9120), (3648, 7780), (3840, 7391), (3890, 7296), (4560, 6224), (4668, 6080), (4864, 5835)]