21771340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:151

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 30483380

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 47, 53, 76, 92, 94, 95, 106, 115, 188, 190, 212, 230, 235, 265, 380, 437, 460, 470, 530, 874, 893, 940, 1007, 1060, 1081, 1219, 1748, 1786, 2014, 2162, 2185, 2438, 2491, 3572, 4028, 4324, 4370, 4465, 4876, 4982, 5035, 5405, 6095, 8740, 8930, 9964, 10070, 10810, 12190, 12455, 17860, 20140, 20539, 21620, 23161, 24380, 24910, 41078, 46322, 47329, 49820, 57293, 82156, 92644, 94658, 102695, 114586, 115805, 189316, 205390, 229172, 231610, 236645, 286465, 410780, 463220, 473290, 572930, 946580, 1088567, 1145860, 2177134, 4354268, 5442835, 10885670, 21771340]

約数ペア:

[(1, 21771340), (2, 10885670), (4, 5442835), (5, 4354268), (10, 2177134), (19, 1145860), (20, 1088567), (23, 946580), (38, 572930), (46, 473290), (47, 463220), (53, 410780), (76, 286465), (92, 236645), (94, 231610), (95, 229172), (106, 205390), (115, 189316), (188, 115805), (190, 114586), (212, 102695), (230, 94658), (235, 92644), (265, 82156), (380, 57293), (437, 49820), (460, 47329), (470, 46322), (530, 41078), (874, 24910), (893, 24380), (940, 23161), (1007, 21620), (1060, 20539), (1081, 20140), (1219, 17860), (1748, 12455), (1786, 12190), (2014, 10810), (2162, 10070), (2185, 9964), (2438, 8930), (2491, 8740), (3572, 6095), (4028, 5405), (4324, 5035), (4370, 4982), (4465, 4876)]