21803640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 70329600

約数和(自身を除く): 48525960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 73, 76, 95, 114, 120, 131, 146, 152, 190, 219, 228, 262, 285, 292, 365, 380, 393, 438, 456, 524, 570, 584, 655, 730, 760, 786, 876, 1048, 1095, 1140, 1310, 1387, 1460, 1572, 1752, 1965, 2190, 2280, 2489, 2620, 2774, 2920, 3144, 3930, 4161, 4380, 4978, 5240, 5548, 6935, 7467, 7860, 8322, 8760, 9563, 9956, 11096, 12445, 13870, 14934, 15720, 16644, 19126, 19912, 20805, 24890, 27740, 28689, 29868, 33288, 37335, 38252, 41610, 47815, 49780, 55480, 57378, 59736, 74670, 76504, 83220, 95630, 99560, 114756, 143445, 149340, 166440, 181697, 191260, 229512, 286890, 298680, 363394, 382520, 545091, 573780, 726788, 908485, 1090182, 1147560, 1453576, 1816970, 2180364, 2725455, 3633940, 4360728, 5450910, 7267880, 10901820, 21803640]

約数ペア:

[(1, 21803640), (2, 10901820), (3, 7267880), (4, 5450910), (5, 4360728), (6, 3633940), (8, 2725455), (10, 2180364), (12, 1816970), (15, 1453576), (19, 1147560), (20, 1090182), (24, 908485), (30, 726788), (38, 573780), (40, 545091), (57, 382520), (60, 363394), (73, 298680), (76, 286890), (95, 229512), (114, 191260), (120, 181697), (131, 166440), (146, 149340), (152, 143445), (190, 114756), (219, 99560), (228, 95630), (262, 83220), (285, 76504), (292, 74670), (365, 59736), (380, 57378), (393, 55480), (438, 49780), (456, 47815), (524, 41610), (570, 38252), (584, 37335), (655, 33288), (730, 29868), (760, 28689), (786, 27740), (876, 24890), (1048, 20805), (1095, 19912), (1140, 19126), (1310, 16644), (1387, 15720), (1460, 14934), (1572, 13870), (1752, 12445), (1965, 11096), (2190, 9956), (2280, 9563), (2489, 8760), (2620, 8322), (2774, 7860), (2920, 7467), (3144, 6935), (3930, 5548), (4161, 5240), (4380, 4978)]